{"title":"Filters for 20\" Big Blue Housings (20\" x 4.5\")","description":"\u003cp\u003eReplacement cartridges for 20\" Big Blue whole-house filter housings. Every filter on this page is the 20\" x 4.5\" size (sometimes listed as 4.5\" x 20\" or 20\" BB), the standard fit for Pentek Big Blue, Watts, PureT and most other 20\" whole-house housings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNot sure which type you need?\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSediment (spun, pleated, string wound, melt blown):\u003c\/strong\u003e removes sand, rust and silt. Use 20–50 micron as a first stage on well water, 5 micron for general use, 1 micron before carbon or UV.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon block (CTO):\u003c\/strong\u003e reduces chlorine taste and odor for city water. Choose a chloramine-rated block if your utility uses chloramine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialty:\u003c\/strong\u003e KDF\/GAC for heavy metals and hydrogen sulfide, iron reduction, softening resin, mixed-bed DI, and arsenic cartridges.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eMost whole-house cartridges are changed every 3–6 months, or sooner if water pressure drops. Questions about fit? Call (714) 541-6600.\u003c\/p\u003e\u003c!--ipwsys--\u003e\u003cp\u003e\u003cstrong\u003eStage-by-stage fit guides:\u003c\/strong\u003e \u003ca href=\"\/pages\/replacement-filters-generic-builder-2-stage-20-big-blue\"\u003eGeneric \/ builder-grade 2-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-generic-builder-3-stage-20-big-blue\"\u003eGeneric \/ builder-grade 3-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-pentek-pentair-big-blue-20\"\u003ePentek \/ Pentair Big Blue 20\"\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-ispring-wgb22b\"\u003eiSpring WGB22B\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-ispring-wgb32b\"\u003eiSpring WGB32B\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-ispring-wgb32bm\"\u003eiSpring WGB32BM\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-home-master-hmf2sdgc\"\u003eHome Master HMF2SDGC\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-home-master-hmf2smgcc\"\u003eHome Master HMF2SMGCC\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-home-master-hmf3sdgfec\"\u003eHome Master HMF3SDGFEC\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-express-water-wh300scks\"\u003eExpress Water WH300SCKS\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-apec-cb3-sed-cab-cbc20-bb\"\u003eAPEC CB3-SED-CAB-CBC20-BB\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-apec-cb3-sed-kdf-cab20-bb\"\u003eAPEC CB3-SED-KDF-CAB20-BB\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-apec-cb3-sed-iron-cab20-bb\"\u003eAPEC CB3-SED-IRON-CAB20-BB\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-kind-water-e-1000\"\u003eKind Water E-1000\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-kind-water-e-3000\"\u003eKind Water E-3000\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-aquaboon-2-stage-20-big-blue\"\u003eAquaboon 2-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-aquaboon-3-stage-20-big-blue\"\u003eAquaboon 3-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-bluonics-3-stage-20-big-blue\"\u003eBluonics 3-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-geekpure-3-stage-20-big-blue\"\u003eGeekpure 3-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-membrane-solutions-3-stage-20-big-blue\"\u003eMembrane Solutions 3-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-brio-whole-house-20-big-blue\"\u003eBrio Whole House 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-tier1-20-big-blue-kit\"\u003eTier1 20\" Big Blue Kit\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-waterdrop-2-stage-20-big-blue\"\u003eWaterdrop 2-Stage 20\" Big Blue\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-simpure-db20p-3\"\u003eSimPure DB20P-3\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-afwfilters-oceanic-3-stage-20-big-blue-well-iron\"\u003eAFWFilters \/ Oceanic 3-Stage 20\" Big Blue Well Iron\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-crystal-quest-big-blue-iron-mn-sulfide-cartridge\"\u003eCrystal Quest Big Blue Iron\/Mn\/Sulfide Cartridge\u003c\/a\u003e. See \u003ca href=\"\/pages\/replacement-filters-by-system\"\u003eall 154 systems\u003c\/a\u003e.\u003c\/p\u003e\u003c!--\/ipwsys--\u003e","products":[{"product_id":"united-filters-international-20-x-4-5-big-blue-depth-string-wound-polypropylene-sediment-filter","title":"United Filters International 20\" x 4.5\" Big Blue Depth String Wound \"UP Series\" Polypropylene Sediment Filter","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\u003cdiv class=\"ro-callout\"\u003eThe United Filters International UP Series 20\" x 4.5\" Big Blue depth string wound filter delivers true depth filtration with exceptional dirt holding capacity across micron ratings from 1 to 100 micron. Engineered from 100% polypropylene using a continuous high-speed wind process, this cartridge handles aggressive chemicals, extreme temperatures up to 200°F, and demanding whole-house, well, or commercial applications.\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCore Specifications\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" x 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBig Blue format\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMicron Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1–100 µm\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMultiple ratings available\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMedia Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003ePolypropylene\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eString wound depth\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMax Temperature\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e200°F\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eHigh thermal tolerance\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eWeight\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e3 lb 8 oz\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePer cartridge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eService Life\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e~6 months\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eVaries by water quality\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eUnited Filters International (UFI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eDepth string wound sediment cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore \u0026amp; Media Material\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (available in various core configurations)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Compatibility\u003c\/td\u003e\n\u003ctd\u003eAcids, alkalis, oxidizing agents, corrosive fluids and gases\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Migration\u003c\/td\u003e\n\u003ctd\u003eExtremely low due to one-piece continuous wind construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicrobial Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent micro-organism resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisposal\u003c\/td\u003e\n\u003ctd\u003eEasily incinerated to trace ash; FDA and non-FDA versions available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Excels\u003c\/h2\u003e\n\u003cp\u003eThe UFI UP Series is built for demanding whole-house, well, and commercial filtration environments requiring sediment removal with chemical resistance. Compatible with standard 20\" x 4.5\" Big Blue housings, this filter handles mineral acids, organic solvents, caustic soda, zinc chloride, ferric hydroxide, plating solutions, ethyl alcohol, animal and petroleum oils, oxidizing agents, alkalis, organic acids, potable water, demineralized water, photographic solutions, and pre-membrane applications. The true depth filtration design captures particulates throughout the entire filter depth rather than just the surface, extending service life and dirt holding capacity. Available in micron ratings of 1, 5, 10, 20, 30, 50, and 100 micron to match specific sediment loads and downstream equipment protection requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pro-tip\"\u003e💧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e String wound filters load from outside to inside, gradually increasing restriction as they capture sediment. Monitor pressure drop across the filter and replace when differential exceeds 15 PSI or flow rate drops noticeably, typically every 6 months in residential applications or sooner in heavy sediment conditions.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Filters International","offers":[{"title":"1 Micron","offer_id":35692996001954,"sku":"UP1J20P","price":49.99,"currency_code":"USD","in_stock":true},{"title":"5 Micron","offer_id":35692996034722,"sku":"UP5J20P","price":50.23,"currency_code":"USD","in_stock":true},{"title":"10 Micron","offer_id":35692996067490,"sku":"UP10J20P","price":49.99,"currency_code":"USD","in_stock":true},{"title":"20 Micron","offer_id":35692996100258,"sku":"UP20J20P","price":50.23,"currency_code":"USD","in_stock":true},{"title":"30 Micron","offer_id":35692996133026,"sku":"UP30J20P","price":49.99,"currency_code":"USD","in_stock":true},{"title":"50 Micron","offer_id":35692996165794,"sku":"UP50J20P","price":49.99,"currency_code":"USD","in_stock":true},{"title":"100 Micron","offer_id":35692996198562,"sku":"UP100J20P","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/united-filters-international-20-x-45-big-blue-depth-string-wound-up-series-polypropylene-sediment-filter-498612.jpg?v=1791926037"},{"product_id":"pentek-cbc-20bb-20-x-4-5-big-blue-carbon-block-filter-0-5-micron","title":"Pentek - CBC-20BB - 20\" x 4.5\" Big Blue Carbon Block Filter 0.5 Micron","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Premium Filtration\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eCBC-20BB\u003c\/em\u003e 20\" x 4.5\" Big Blue Carbon Block Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eWhole-house carbon block filtration engineered for superior taste, odor, and chlorine reduction down to 0.5 microns\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 0.5 Micron Carbon Block\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 150,000 Gallon Capacity\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Cyst Reduction Certified\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ FDA Compliant Materials\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Pentek CBC-20BB uses bonded powdered activated carbon (PAC) in a solid block structure to reduce chlorine taste and odor while filtering sediment and cysts down to \u003cstrong\u003e0.5 microns\u003c\/strong\u003e. Rated for \u003cstrong\u003e150,000 gallons\u003c\/strong\u003e at \u003cstrong\u003e4 GPM\u003c\/strong\u003e, this 20\" x 4.5\" cartridge fits standard Big Blue housings and handles whole-house flow rates without excessive pressure drop. Manufactured entirely from FDA-compliant materials using a patented process that ensures consistent performance across residential, commercial, and food service applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhy the CBC-20BB Outperforms Standard Carbon Filters\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🦠\u003c\/span\u003e\n\u003ch3\u003eCyst Reduction\u003c\/h3\u003e\n\u003cp\u003eReduces Giardia, Cryptosporidium, Entamoeba, and Toxoplasma cysts along with fine sediment particles down to 0.5 microns\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003eBonded PAC Structure\u003c\/h3\u003e\n\u003cp\u003ePatented carbon block construction provides consistent filtration and superior chlorine reduction compared to granular carbon\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🏠\u003c\/span\u003e\n\u003ch3\u003eHigh Flow Capacity\u003c\/h3\u003e\n\u003cp\u003eHandles up to 4 GPM with only 8.5 psi pressure drop, suitable for whole-house and commercial installations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔧\u003c\/span\u003e\n\u003ch3\u003eBig Blue Compatible\u003c\/h3\u003e\n\u003cp\u003eFits all standard 20\" x 4.5\" Big Blue housings with polystyrene end caps and polyethylene netting for durability\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🌡️\u003c\/span\u003e\n\u003ch3\u003eWide Temp Range\u003c\/h3\u003e\n\u003cp\u003eOperates reliably from 40°F to 180°F, suitable for both cold and warm water applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e✓\u003c\/span\u003e\n\u003ch3\u003eFDA Compliant\u003c\/h3\u003e\n\u003cp\u003eAll materials meet FDA requirements for potable water contact, safe for drinking water and food service use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhere This Filter Works\u003c\/h3\u003e\n\u003cp\u003eThe Pentek CBC-20BB (also known as part number 155312-43) is designed for 20-inch Big Blue filter housings with 4.5-inch diameter capacity. It works as a primary whole-house carbon filter, a polishing filter after sediment pre-filtration, or a pre-filter before reverse osmosis membranes and other fine filtration stages. Common applications include residential well water systems, municipal chlorine removal, commercial food service equipment protection, and industrial process water treatment. Compatible with Pentek, US Filter Works, Hydronix, and other manufacturers' 20\" x 4.5\" Big Blue housing systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003ePentek has been manufacturing water filtration components for over 40 years, and the CBC series remains the standard for carbon block reliability in whole-house applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Single","offer_id":37727261130923,"sku":"155312-43","price":196.69,"currency_code":"USD","in_stock":true},{"title":"Pack of 2","offer_id":37727261163691,"sku":"(2) 155312-43","price":353.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-cbc-20bb-20-x-45-big-blue-carbon-block-filter-05-micron-673802.jpg?v=1762459428"},{"product_id":"pentek-ecp5-20bb-20-x-4-5-pleated-cellulose-sediment-5-micron-filter","title":"Pentek - ECP5-20BB - 20\" x 4.5\" Pleated Cellulose Sediment 5 Micron Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Premium Filtration\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eECP5-20BB\u003c\/em\u003e 20\" x 4.5\" Pleated Cellulose Sediment Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eHigh-capacity 5 micron pleated sediment filtration for whole house, well, and commercial applications\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 36 sq ft media surface area\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Resin-impregnated cellulose\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Color-coded white end caps\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Low pressure drop design\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Pentek ECP5-20BB combines resin-impregnated cellulose and polyester fibers into a \u003cstrong\u003e36 square foot\u003c\/strong\u003e pleated cartridge designed for Big Blue 20\" housings. Built for high flow rates and extended service life, this \u003cstrong\u003e5 micron nominal\u003c\/strong\u003e filter delivers exceptional dirt-holding capacity while maintaining minimal pressure drop across whole house and commercial systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFilter Construction \u0026amp; Performance\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" x 4.5\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicron Rating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5 micron (nominal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Surface Area\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e36 sq ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Drop\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1 psi @ 10 GPM\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Composition\u003c\/td\u003e\n\u003ctd\u003eResin-impregnated cellulose \u0026amp; polyester fibers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Material\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Cap Material\u003c\/td\u003e\n\u003ctd\u003eVinyl plastisol (white color-coded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e40°F to 125°F (4.4°C to 51.7°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY ECP SERIES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eEngineered for Demanding Applications\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eSuperior Wet Strength\u003c\/h3\u003e\n\u003cp\u003eResin-impregnated formulation delivers higher structural integrity than standard cellulose filters, preventing media breakdown under pressure\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📐\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eUnified End Cap Design\u003c\/h3\u003e\n\u003cp\u003ePleats immersed in thermo-setting vinyl plastisol fuse the core, media, and gasket into a single integrated structure that prevents bypass\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔄\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eHigh Dirt Capacity\u003c\/h3\u003e\n\u003cp\u003e36 square feet of pleated media captures more sediment between changeouts, extending service intervals and reducing maintenance costs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚡\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eLow Pressure Drop\u003c\/h3\u003e\n\u003cp\u003eMaintains just 1 psi drop at 10 GPM flow rate, preserving system pressure and pump efficiency across whole house installations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎨\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eColor-Coded System\u003c\/h3\u003e\n\u003cp\u003eWhite end caps identify 5 micron rating at a glance, simplifying filter identification during maintenance and replacement cycles\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🏗️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eCommercial Grade\u003c\/h3\u003e\n\u003cp\u003eBuilt for high-demand applications including well systems, commercial facilities, and point-of-entry whole house filtration\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eSystem Integration\u003c\/h3\u003e\n\u003cp\u003eThe Pentek ECP5-20BB (model 255494-43) fits all standard 20\" x 4.5\" Big Blue filter housings. Designed for whole house sediment filtration, well water pretreatment, and commercial applications requiring high flow capacity. Ideal as a prefilter stage ahead of carbon blocks, reverse osmosis systems, or UV sterilizers. Compatible with Pentek, Culligan, GE, and other manufacturers' 20-inch Big Blue housings. Recommended for municipal and well water sources with moderate to heavy sediment loads.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003ePentek ECP Series filters are manufactured in the USA to NSF\/ANSI standards, trusted by water treatment professionals for over four decades.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35470102528162,"sku":"255494-43","price":70.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-ecp5-20bb-20-x-45-pleated-cellulose-sediment-5-micron-filter-876505.jpg?v=1759500167"},{"product_id":"pentek-ep-20bb-20-x-4-5-carbon-briquette-5-micron-filter","title":"Pentek - EP-20BB - 20\" x 4.5\" Carbon-Briquette 5 Micron Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Pentek EP-20BB is a 20\" x 4.5\" carbon-briquette cartridge that combines the deep reduction power of activated carbon with a nominal 5-micron sediment rating and an Endurawrap pre-filter for extended service life. Rated for 40,000 gallons and designed for whole-house, commercial, and well water systems, it delivers reliable chlorine, taste, and odor removal without sacrificing flow or capacity.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003ePentek EP-20BB Filter Specs\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" x 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFits Big Blue housings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFiltration Rating\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e5 Micron\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eNominal rating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFilter Life\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e40,000 Gal\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBased on mfr testing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFlow Rate\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e5 GPM\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e5.5 psi pressure drop\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMedia Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eCarbon Block\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBonded PAC construction\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTemperature Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e40°F – 180°F\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFDA compliant materials\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eConstruction \u0026amp; Materials\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Media\u003c\/td\u003e\n\u003ctd\u003eBonded Powdered Activated Carbon (PAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePre-Filter Wrap\u003c\/td\u003e\n\u003ctd\u003eEndurawrap polyolefin bilaminate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Caps\u003c\/td\u003e\n\u003ctd\u003ePolystyrene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetting\u003c\/td\u003e\n\u003ctd\u003ePolyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner\/Outer Wrap\u003c\/td\u003e\n\u003ctd\u003ePolyolefin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eFDA compliant materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eEP-20BB (Pentek 155583-43)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Works\u003c\/h2\u003e\n\u003cp\u003eThe Pentek EP-20BB is designed for 20-inch Big Blue filter housings and is ideal for whole-house filtration, commercial food service, well water treatment, and any application requiring both sediment reduction and chlorine removal. The Endurawrap pre-filter traps sediment before it can plug the carbon block, making this cartridge especially effective in higher-sediment environments where standard carbon blocks fail prematurely. Use it in residential point-of-entry systems, restaurant ice machines, beverage dispensers, or light industrial settings where taste, odor, and chlorine reduction are priorities alongside dirt-holding capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 The EP-20BB's high-porosity design prevents premature plugging, so you actually use the carbon's full adsorption capacity instead of replacing a clogged cartridge with chlorine reduction left on the table.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Single","offer_id":37752295719083,"sku":"155583-43","price":167.85,"currency_code":"USD","in_stock":true},{"title":"Pack of 2","offer_id":42774645637291,"sku":"(2) 155583-43","price":318.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 3","offer_id":43080098185387,"sku":"(3) 155583-43","price":465.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 4","offer_id":37752295817387,"sku":"(4) 155583-43","price":603.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-ep-20bb-20-x-45-carbon-briquette-5-micron-filter-350412.jpg?v=1762459430"},{"product_id":"pentek-epm-20bb-20-x-4-5-modified-epsilon-carbon-briquette-10-micron-filter","title":"Pentek - EPM-20BB - 20\" x 4.5\" Modified Epsilon Carbon-Briquette 10 Micron Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Pentek EPM-20BB delivers economical whole-house filtration with modified epsilon carbon-briquette technology that balances sediment removal, chlorine reduction, and high flow capacity in a 20\" x 4.5\" cartridge. Endurawrap polyolefin pre-filter protection extends service life by trapping sediment before it clogs the carbon block, maximizing the full 30,000-gallon capacity.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003ePentek EPM-20BB Technical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eEPM-20BB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" (4-5\/8\" OD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration Rating\u003c\/td\u003e\n\u003ctd\u003e10 Micron Nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Media\u003c\/td\u003e\n\u003ctd\u003eBonded PAC Carbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e30,000 Gallons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Drop\u003c\/td\u003e\n\u003ctd\u003e4.0 psi @ 4 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e40°F to 180°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Caps \/ Wrap\u003c\/td\u003e\n\u003ctd\u003ePolystyrene \/ Polyolefin Endurawrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eInstalling Your EPM-20BB Filter\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eShut off water supply and relieve pressure from your 20\" Big Blue housing by opening a downstream faucet\u003c\/li\u003e\n\u003cli\u003eUnscrew housing sump, remove old cartridge, and clean sump interior with mild soap and water\u003c\/li\u003e\n\u003cli\u003eInsert the EPM-20BB cartridge into the housing with the Endurawrap side facing outward, ensuring proper seal with the housing cap\u003c\/li\u003e\n\u003cli\u003eReinstall sump hand-tight, turn water supply back on slowly, and check for leaks around the housing o-ring\u003c\/li\u003e\n\u003cli\u003eFlush the new cartridge for 5 minutes to remove any carbon fines and activate the media\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHousing \u0026amp; Application Fit\u003c\/h2\u003e\n\u003cp\u003eThe Pentek EPM-20BB fits all standard 20-inch Big Blue filter housings with 4.5\" diameter capacity, including Pentek, Culligan, and most major brands. This cartridge is designed for whole-house, well water, and commercial applications where economical chlorine taste and odor reduction is needed alongside sediment filtration. The high-porosity carbon block construction maintains flow rates suitable for residential and light commercial installations while the Endurawrap pre-filter extends service life in moderate to heavy sediment conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Mark your calendar when you install the EPM-20BB. Even if pressure remains normal, replace at 30,000 gallons or 12 months to prevent channeling and ensure consistent chlorine reduction throughout the cartridge's service life.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Single","offer_id":37752317313195,"sku":"155783-43","price":114.84,"currency_code":"USD","in_stock":true},{"title":"Pack of 2","offer_id":42680361484459,"sku":"(2) 155783-43","price":217.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 3","offer_id":42681781813419,"sku":"(3) 155783-43","price":318.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 4","offer_id":37752317411499,"sku":"(4) 155783-43","price":412.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536595673250-padded.jpg?v=1777268065"},{"product_id":"pentek-gac-20bb-20-x-4-5-granular-activated-carbon-filter","title":"Pentek - GAC-20BB - 20\" x 4.5\" Granular Activated Carbon Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Professional Series\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eGAC-20BB\u003c\/em\u003e 20\" x 4.5\" Granular Activated Carbon Filter\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eHigh-capacity carbon filtration for whole house, commercial, and well water systems requiring chlorine, taste, and odor reduction with minimal pressure drop\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 25,000 gallon capacity\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 20-micron post-filter\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 4 GPM flow rate\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Anti-channeling design\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Pentek GAC-20BB uses a full-length granular activated carbon bed with forced-contact flow path to maximize chlorine removal and reduce taste and odor throughout the entire \u003cstrong\u003e25,000 gallon\u003c\/strong\u003e service life. A permanently fastened \u003cstrong\u003e20-micron spun polypropylene post-filter\u003c\/strong\u003e captures carbon fines before water exits the cartridge, while an internal expansion pad prevents channeling and media bypass. Rated for \u003cstrong\u003e4 GPM at 5 psi\u003c\/strong\u003e pressure drop, this filter fits standard 20\" x 4.5\" Big Blue housings.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eEngineered for Maximum Carbon Contact\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔄\u003c\/span\u003e\n\u003ch3\u003eFull-Length Flow Path\u003c\/h3\u003e\n\u003cp\u003eWater enters one end and travels through the entire carbon bed before exiting, ensuring maximum contact time and adsorption efficiency\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🛡️\u003c\/span\u003e\n\u003ch3\u003e20-Micron Post-Filter\u003c\/h3\u003e\n\u003cp\u003eSpun polypropylene filter permanently fastened to support basket captures carbon fines and suspended particles before discharge\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e⚡\u003c\/span\u003e\n\u003ch3\u003eAnti-Channeling Design\u003c\/h3\u003e\n\u003cp\u003eInternal expansion pad minimizes media migration and water bypass, maintaining consistent filtration throughout the cartridge life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003eHigh Flow Performance\u003c\/h3\u003e\n\u003cp\u003eDelivers 4 GPM with only 5 psi pressure drop, suitable for residential whole house and light commercial applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🌡️\u003c\/span\u003e\n\u003ch3\u003eWide Temperature Range\u003c\/h3\u003e\n\u003cp\u003eRated for 40°F to 125°F operation with polystyrene end caps, Buna-N and Santoprene gaskets for secure sealing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🎯\u003c\/span\u003e\n\u003ch3\u003eGeneral Purpose Filtration\u003c\/h3\u003e\n\u003cp\u003eEffectively reduces chlorine taste and odor, unpleasant tastes, and organic contaminants for improved drinking water quality\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eGAC-20BB (Pentek 155249-43)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" x 4.625\" (4-5\/8\")\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Media\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eGranular Activated Carbon (GAC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePost-Filter Micron\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20 micron\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Rate\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e4 GPM at 5 psi pressure drop\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e25,000 gallons at 4 GPM\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Rating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e40°F to 125°F\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Cap Material\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePolystyrene\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGasket Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eBuna-N (top), Santoprene (bottom)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" x 4.5\" Big Blue housings\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eSystem Fit and Use Cases\u003c\/h3\u003e\n\u003cp\u003eThe Pentek GAC-20BB fits all standard 20-inch x 4.5-inch Big Blue filter housings. Ideal for whole house water filtration systems, point-of-entry well water treatment, commercial applications requiring chlorine reduction, and any installation where taste, odor, and chlorine removal is needed at flow rates up to 4 GPM. Replace every 25,000 gallons or when taste and odor breakthrough occurs. Compatible with Pentek, Pentair, and other manufacturers' 20\" Big Blue housings using standard gasket seals.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003ePentek has manufactured reliable water filtration cartridges for residential, commercial, and industrial applications for decades. The GAC-20BB is made in the USA with quality materials and consistent performance standards.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Single","offer_id":42693411930283,"sku":"155249-43","price":117.16,"currency_code":"USD","in_stock":true},{"title":"Pack of 2","offer_id":42693411963051,"sku":"2x 155249-44","price":216.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 3","offer_id":42797454557355,"sku":"3x 155249-44","price":315.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-gac-20bb-20-x-45-granular-activated-carbon-filter-962494.jpg?v=1762459430"},{"product_id":"pentek-ncp-20bb-20-x-4-5-pleated-carbon-impregnated-polypropylene-10-micron-filter","title":"Pentek - NCP-20BB - 20\" x 4.5\" Pleated Carbon-Impregnated Polypropylene 10 Micron Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Professional Grade Filtration\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Pleated Carbon-Impregnated \u003cem\u003eNCP-20BB\u003c\/em\u003e 10 Micron Filter\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eDual-action sediment and carbon filtration in a single pleated cartridge engineered for whole-house, well water, and commercial applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e10 Micron Nominal\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" x 4.5\" Big Blue\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e1000 Gallon Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCarbon-impregnated pleats deliver sediment filtration and chlorine reduction without bacterial growth\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🧬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eCarbon-Impregnated Polyester\u003c\/h3\u003e\n\u003cp\u003eNon-cellulose media resists bacterial attack, making the NCP-20BB ideal for both chlorinated municipal water and non-chlorinated well systems where cellulose filters fail\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📐\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eHigh Surface Area Pleating\u003c\/h3\u003e\n\u003cp\u003ePleated construction increases dirt-loading capacity and extends service life while maintaining minimal pressure drop across the filter, even at 10 GPM flow rates\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eDual-Action Filtration\u003c\/h3\u003e\n\u003cp\u003eCaptures sediment down to 10 microns while simultaneously reducing chlorine taste and odor, eliminating the need for separate sediment and carbon stages in many installations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔄\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003ePost-RO and Polishing\u003c\/h3\u003e\n\u003cp\u003eExcels as a polishing filter for reverse osmosis systems, closed loop streams, and well water applications where fine sediment and taste issues persist after primary treatment\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePentek NCP-20BB Technical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eNCP-20BB (Pentek 155382-43)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20 inches x 4.5 inches outer diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eMicron Rating\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e10 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eFilter Media\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePleated carbon-impregnated polyester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eEnd Caps\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eVinyl plastisol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eCore Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eNetting\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePolyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e40°F to 145°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003ePressure Drop\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e1 psi at 10 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eFilter Capacity\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eApproximately 1000 gallons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eDesigned for 20\" Big Blue Filter Housings\u003c\/h3\u003e\n\u003cp\u003eThe Pentek NCP-20BB fits all standard 20-inch x 4.5-inch Big Blue filter housings. Compatible with Pentek, American Plumber, Culligan, DuPont, GE, Omni, US Filter, and other brands using the 20\" Big Blue sump configuration. Verify your housing accepts 4.5-inch outer diameter cartridges before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eReplacement Schedule for NCP-20BB Filters\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 3-6 Months\u003c\/div\u003e\n\u003ch4\u003eWhole-House Municipal Water\u003c\/h4\u003e\n\u003cp\u003eReplace when pressure drops noticeably or at 6-month intervals for household water with moderate sediment and chlorine levels\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 2-4 Months\u003c\/div\u003e\n\u003ch4\u003eWell Water Applications\u003c\/h4\u003e\n\u003cp\u003eMore frequent replacement required for well water with higher sediment loads or iron staining, typically every 2-3 months depending on usage\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 6-12 Months\u003c\/div\u003e\n\u003ch4\u003ePost-RO Polishing\u003c\/h4\u003e\n\u003cp\u003eExtended service life when used as a final polishing stage after reverse osmosis, typically 6-12 months or after 1000 gallons processed\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eMonitor Pressure\u003c\/div\u003e\n\u003ch4\u003eCommercial Installations\u003c\/h4\u003e\n\u003cp\u003eInstall differential pressure gauge and replace when pressure drop exceeds 10-15 psi or flow rate decreases below operational requirements\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🛡️\u003c\/div\u003e\n\u003ch4\u003eBacteria Resistant\u003c\/h4\u003e\n\u003cp\u003eNon-cellulose construction prevents bacterial colonization in non-chlorinated water\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⚡\u003c\/div\u003e\n\u003ch4\u003eLow Pressure Drop\u003c\/h4\u003e\n\u003cp\u003eMaintains 1 psi drop at 10 GPM for consistent flow throughout service life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🎯\u003c\/div\u003e\n\u003ch4\u003eDual Reduction\u003c\/h4\u003e\n\u003cp\u003eRemoves sediment and reduces chlorine taste and odor in one cartridge\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏭\u003c\/div\u003e\n\u003ch4\u003eCommercial Grade\u003c\/h4\u003e\n\u003cp\u003ePentek quality engineering for demanding whole-house and commercial applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Single","offer_id":37767575175339,"sku":"155382-43","price":95.0,"currency_code":"USD","in_stock":true},{"title":"Pack of 2","offer_id":42666675208363,"sku":"(2) 155382-43","price":175.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 6","offer_id":37767575208107,"sku":"(6) 155382-43","price":512.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-ncp-20bb-20-x-45-pleated-carbon-impregnated-polypropylene-10-micron-filter-786929.jpg?v=1759500168"},{"product_id":"pentek-rfc20-bb-20-x-4-5-radial-flow-carbon-25-micron-filter","title":"Pentek - RFC20-BB - 20\" x 4.5\" Radial Flow Carbon 25 Micron Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n  \u003cdiv class=\"ro-callout\"\u003e\n    The Pentek RFC20-BB is a 20\" x 4.5\" radial flow carbon filter engineered to deliver high-capacity chlorine and taste removal with minimal pressure drop and virtually no carbon fines release. With a 70,000-gallon capacity and 25-micron filtration, this GAC cartridge is built for whole-house, well, and commercial applications where flow rate and water quality both matter.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003ePentek RFC20-BB Technical Details\u003c\/h2\u003e\n    \u003ctable class=\"specs-table\"\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eModel Number\u003c\/td\u003e\n        \u003ctd\u003eRFC20-BB (155247-43)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimensions\u003c\/td\u003e\n        \u003ctd\u003e20\" x 4.5\" (4-5\/8\" OD x 20\" length)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMicron Rating\u003c\/td\u003e\n        \u003ctd\u003e25 micron\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFilter Media\u003c\/td\u003e\n        \u003ctd\u003eGranular Activated Carbon (GAC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFilter Capacity\u003c\/td\u003e\n        \u003ctd\u003e70,000 gallons\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePressure Drop\u003c\/td\u003e\n        \u003ctd\u003e0.9 psi @ 4 GPM\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTemperature Range\u003c\/td\u003e\n        \u003ctd\u003e40°F to 180°F\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConstruction\u003c\/td\u003e\n        \u003ctd\u003e70-micron polyethylene shell, polypropylene core and end caps\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eHow to Install the RFC20-BB Filter\u003c\/h2\u003e\n    \u003col class=\"install-steps\"\u003e\n      \u003cli\u003eShut off water supply and relieve pressure from the filter housing by opening the pressure relief valve.\u003c\/li\u003e\n      \u003cli\u003eUnscrew the 20\" Big Blue housing sump, remove the old filter, and clean the housing interior and o-ring groove.\u003c\/li\u003e\n      \u003cli\u003eInsert the RFC20-BB filter vertically into the housing, ensuring the open end faces up and the filter seats properly on the standpipe.\u003c\/li\u003e\n      \u003cli\u003eApply a thin layer of food-grade silicone grease to the o-ring, reseat the housing sump, and hand-tighten firmly.\u003c\/li\u003e\n      \u003cli\u003eSlowly turn on water supply, check for leaks, and flush the filter for 3-5 minutes to purge air and prime the carbon bed.\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eHousing \u0026amp; Application Fit\u003c\/h2\u003e\n    \u003cp\u003eThe Pentek RFC20-BB is designed for use in standard 20\" x 4.5\" Big Blue filter housings from Pentek, Culligan, Aqua-Pure, and other manufacturers with compatible dimensions. This filter is ideal for whole-house water treatment, well water systems, and commercial applications requiring high flow rates with effective chlorine, taste, and odor reduction. The radial flow design minimizes carbon fines and pressure drop, making it a reliable choice for point-of-entry installations where sediment pre-filtration is already in place.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pro-tip\"\u003e\n    🔧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Always install a 5-20 micron sediment pre-filter upstream of the RFC20-BB to extend the carbon filter's life and prevent premature clogging from particulate matter. This setup maximizes the GAC's chemical adsorption capacity and ensures consistent flow rates throughout the 70,000-gallon service life.\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35470103478434,"sku":"155247-43","price":160.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-rfc20-bb-20-x-45-radial-flow-carbon-25-micron-filter-302387.jpg?v=1762459432"},{"product_id":"pentek-rffe-20-bb-20-x-4-5-radial-flow-iron-reduction-filter","title":"Pentek - RFFE20-BB - 20\" x 4.5\" Radial-Flow Iron Reduction Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Specialty Filtration\u003c\/div\u003e\n\u003ch2\u003eRFFE20-BB \u003cem\u003eRadial-Flow Iron Reduction Filter\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003e20\" x 4.5\" Big Blue cartridge engineered to remove dissolved iron and eliminate rust staining without adding chemicals to your water supply\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Reduces up to 3 ppm dissolved iron\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Eliminates orange \u0026amp; brown stains\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Chemical-free operation\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Safe for drinking water\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Pentek RFFE20-BB uses radial-flow media technology to oxidize and remove dissolved ferrous iron from well water, city water, and whole-house applications. Designed for \u003cstrong\u003e20\" x 4.5\" Big Blue housings\u003c\/strong\u003e, this cartridge reduces iron concentrations up to \u003cstrong\u003e3 ppm\u003c\/strong\u003e while preventing damage to pipes, water heaters, and fixtures throughout your home or facility.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhy the RFFE20-BB Stands Out\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔄\u003c\/span\u003e\n\u003ch3\u003eRadial-Flow Design\u003c\/h3\u003e\n\u003cp\u003eWater flows from the outside to the center, maximizing media contact time and filtration efficiency across the entire cartridge length\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🛡️\u003c\/span\u003e\n\u003ch3\u003eNo Chemical Additives\u003c\/h3\u003e\n\u003cp\u003eIron oxidation occurs through catalytic media without introducing phosphates, salts, or other chemicals into your drinking water supply\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🚰\u003c\/span\u003e\n\u003ch3\u003eStain Prevention\u003c\/h3\u003e\n\u003cp\u003eStops the formation of rust-colored deposits on sinks, toilets, tubs, and fixtures caused by oxidized iron in water\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e⚡\u003c\/span\u003e\n\u003ch3\u003eSystem Protection\u003c\/h3\u003e\n\u003cp\u003eReduces iron buildup in pipes, water heaters, and appliances, extending equipment life and maintaining flow rates\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003eHigh Capacity\u003c\/h3\u003e\n\u003cp\u003eHandles 80,000 to 160,000 gallons depending on iron concentration, offering extended service intervals between cartridge changes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e📊\u003c\/span\u003e\n\u003ch3\u003ePerformance-Tested\u003c\/h3\u003e\n\u003cp\u003eRated for iron levels from 0.5 to 3 ppm with predictable capacity based on household water consumption and iron concentration\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eFILTER LIFE \u0026amp; CAPACITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eExpected Service Intervals by Iron Level\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eIron Level\u003c\/th\u003e\n\u003cth\u003eTotal Capacity\u003c\/th\u003e\n\u003cth\u003e1 Person (75 GPD)\u003c\/th\u003e\n\u003cth\u003e2 People (125 GPD)\u003c\/th\u003e\n\u003cth\u003e4 People (250 GPD)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 ppm\u003c\/td\u003e\n\u003ctd\u003e26,000 gallons\u003c\/td\u003e\n\u003ctd\u003e416 days\u003c\/td\u003e\n\u003ctd\u003e208 days\u003c\/td\u003e\n\u003ctd\u003e104 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 ppm\u003c\/td\u003e\n\u003ctd\u003e40,000 gallons\u003c\/td\u003e\n\u003ctd\u003e640 days\u003c\/td\u003e\n\u003ctd\u003e320 days\u003c\/td\u003e\n\u003ctd\u003e160 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 ppm\u003c\/td\u003e\n\u003ctd\u003e80,000 gallons\u003c\/td\u003e\n\u003ctd\u003e1,280 days\u003c\/td\u003e\n\u003ctd\u003e640 days\u003c\/td\u003e\n\u003ctd\u003e320 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.5 ppm\u003c\/td\u003e\n\u003ctd\u003e160,000 gallons\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1,280 days\u003c\/td\u003e\n\u003ctd\u003e640 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eOPERATING REQUIREMENTS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eRecommended Water Conditions\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRequirement\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Level\u003c\/td\u003e\n\u003ctd\u003eGreater than 7.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissolved Iron\u003c\/td\u003e\n\u003ctd\u003eLess than 3 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManganese\u003c\/td\u003e\n\u003ctd\u003eLess than 1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilica\u003c\/td\u003e\n\u003ctd\u003eLess than 100 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron Bacteria\u003c\/td\u003e\n\u003ctd\u003eNone present\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydrogen Sulfide\u003c\/td\u003e\n\u003ctd\u003eNone present\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eInstallation \u0026amp; System Integration\u003c\/h3\u003e\n\u003cp\u003eThe Pentek RFFE20-BB (model 155263-03) fits standard 20-inch x 4.5-inch Big Blue filter housings and should be installed on the main cold water line after the pressure tank or water meter. Ideal for whole-house filtration, well water treatment, and commercial applications where iron reduction is required. For optimal performance and extended cartridge life, install a 5-micron sediment filter upstream and a carbon block filter downstream to polish taste and remove any residual oxidized iron particles. Compatible with Pentek Big Blue housings including the #20 and similar 20\" x 4.5\" configurations from major manufacturers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003ePentek has manufactured reliable filtration media for residential, commercial, and industrial water treatment systems for over four decades, with every cartridge produced to consistent specifications for predictable performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35470103543970,"sku":"155263-43","price":277.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-rffe20-bb-20-x-45-radial-flow-iron-reduction-filter-253418.jpg?v=1759500168"},{"product_id":"pentek-wp5bb20p-20-x-4-5-polypropylene-string-wound-filter","title":"Pentek - WP5BB20P - 20\" x 4.5\" Polypropylene String Wound Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek • String Wound Sediment Filter\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Polypropylene String Wound Filter \u003cem\u003eWP5BB20P\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003ePrecision-wound polypropylene sediment filter with 5 micron nominal rating for high-capacity whole house, well, and commercial applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e5 Micron Nominal\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" x 4.5\" Big Blue\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eString Wound\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eEngineered for Higher Dirt-Loading Capacity\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🌀\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003ePrecision Wound Pattern\u003c\/h3\u003e\n\u003cp\u003ePolypropylene cord wound in a precise pattern around a rigid core creates greater surface area than standard wound cartridges, improving efficiency and capacity\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🏗️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eDurable Construction\u003c\/h3\u003e\n\u003cp\u003ePolypropylene media and core withstand temperatures from 40°F to 125°F, suitable for municipal water, well water, and many industrial fluids\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚙️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eEconomical Performance\u003c\/h3\u003e\n\u003cp\u003eReduces fine sediment including sand, silt, rust, and scale particles at 5 micron nominal rating with minimal pressure drop—just 1 psi at 10 GPM\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eBig Blue Capacity\u003c\/h3\u003e\n\u003cp\u003e20\" x 4.5\" dimensions provide extended filter life and higher flow rates for whole house and commercial installations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWP5BB20P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Micron (Nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRigid Polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40°F to 125°F (4.4°C to 51.7°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure Drop\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 psi @ 10 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhole House, Well Water, Commercial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFits Standard 20\" Big Blue Housings\u003c\/h3\u003e\n\u003cp\u003eThe Pentek WP5BB20P is designed for use in standard 20\" x 4.5\" Big Blue filter housings. Compatible with Pentek, Pentair, and most major brands of 20-inch sump-style housings rated for sediment filtration in residential, commercial, and industrial settings.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eReplacement Schedule\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 3-6 Months\u003c\/div\u003e\n\u003ch4\u003eWhole House \u0026amp; Municipal\u003c\/h4\u003e\n\u003cp\u003eReplace WP5BB20P cartridge every 3 to 6 months depending on water quality and household usage\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 2-4 Months\u003c\/div\u003e\n\u003ch4\u003eWell Water Applications\u003c\/h4\u003e\n\u003cp\u003eMore frequent replacement recommended for well water with higher sediment loads—monitor pressure drop\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAs Needed\u003c\/div\u003e\n\u003ch4\u003eCommercial \u0026amp; Industrial\u003c\/h4\u003e\n\u003cp\u003eReplace based on pressure differential and flow rate monitoring—typically every 1 to 6 months depending on sediment levels\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔧\u003c\/div\u003e\n\u003ch4\u003eEasy Installation\u003c\/h4\u003e\n\u003cp\u003eDrop-in replacement for standard 20\" Big Blue cartridges\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏭\u003c\/div\u003e\n\u003ch4\u003eVersatile Use\u003c\/h4\u003e\n\u003cp\u003eMunicipal, well, and industrial fluid applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e📊\u003c\/div\u003e\n\u003ch4\u003eHigh Capacity\u003c\/h4\u003e\n\u003cp\u003eGreater dirt-loading than standard wound filters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eCost Effective\u003c\/h4\u003e\n\u003cp\u003eEconomical sediment reduction solution\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35470104166562,"sku":"355223-43","price":95.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-wp5bb20p-20-x-45-polypropylene-string-wound-filter-922372.jpg?v=1791926037"},{"product_id":"pentek-ws-20bb-20-x-4-5-water-softening-resin-filter","title":"Pentek - WS-20BB - 20\" x 4.5\" Water Softening Resin Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Water Softening\u003c\/div\u003e\n\u003ch2\u003eWS-20BB 20\" x 4.5\" Softening Resin Cartridge\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eSodium-form cation exchange resin in a drop-in cartridge for point-of-use water softening\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e4,500 Grain Capacity\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" x 4.5\" Big Blue\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eReduces Scale\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e2.0 GPM Flow\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Pentek WS-20BB delivers water softening in a standard cartridge format, eliminating the need for a full softener tank. Sodium-form cation exchange resin captures hardness minerals like calcium and magnesium, reducing scale buildup in appliances, fixtures, and equipment where hard water is a problem.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eIon Exchange Softening Process\u003c\/h3\u003e\n\u003cdiv class=\"stage-pipeline\"\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003ePREFILTRATION\u003c\/span\u003e\n\u003ch3\u003eSediment Pre-Filter Layer\u003c\/h3\u003e\n\u003cp\u003ePolypropylene pre-filter captures particulate matter before water reaches the resin bed, preventing fouling and maintaining efficiency.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eEXCHANGE\u003c\/span\u003e\n\u003ch3\u003eCation Resin Bed\u003c\/h3\u003e\n\u003cp\u003eSodium-charged resin beads exchange sodium ions for hardness-causing calcium and magnesium, reducing scale formation up to 4,500 grains total capacity.\u003c\/p\u003e\n\u003cspan class=\"stage-part\"\u003e77,000 PPM TDS capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003ePOLISH\u003c\/span\u003e\n\u003ch3\u003ePost-Filter Protection\u003c\/h3\u003e\n\u003cp\u003ePolypropylene post-filter retains resin fines and ensures only softened, clean water exits the cartridge at up to 2.0 gallons per minute.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWS-20BB Technical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eWS-20BB (Pentek 155321-03)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20\" x 4.5\" (Big Blue)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eSoftening Capacity\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e4,500 grains (as CaCO3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eTotal TDS Capacity\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e77,000 PPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFlow Rate\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e2.0 GPM maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFilter Media\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eSodium-form cation exchange resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eHousing Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePolypropylene shell and end caps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eGasket Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eBuna-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e40°F to 100°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHousing Requirements\u003c\/h3\u003e\n\u003cp\u003eThe Pentek WS-20BB fits all standard 20-inch Big Blue filter housings with 4.5-inch inner diameter. Ideal for point-of-use applications including ice makers, dishwashers, coffee equipment, and small water heaters where hard water causes scaling. This cartridge is non-regenerable and should be replaced when softening capacity is exhausted, typically indicated by scale formation or hardness testing. Not intended for whole-house softening or drinking water applications where sodium content is a concern.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35470104232098,"sku":"155321-43","price":134.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-ws-20bb-20-x-45-water-softening-resin-filter-471403.jpg?v=1762459435"},{"product_id":"pentek-155360-43-20x4-5-big-blue-dgd-2501-20-dual-gradient-polypropylene-sediment-1-micron-filter","title":"Pentek - DGD Series 20\" x 4.5\" Big Blue Dual-Gradient Density Polypropylene Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Pentek DGD Series 20\" x 4.5\" dual-gradient sediment filter delivers up to three times the dirt-holding capacity of standard spun or wound cartridges by combining two gradient density layers in a single 100% pure polypropylene construction. Available in three dual-gradient configurations (25\/1, 50\/5, and 75\/25 micron), it fits all standard Big Blue 20\" housings and handles flow rates up to 20 GPM with minimal pressure drop.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003ePentek DGD-2501 Filter Specifications\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" × 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFits Big Blue housings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMicron Rating\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e25 \/ 1 µm\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eDual-gradient layers\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFlow Rate\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20 GPM\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMaximum rated flow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePressure Drop\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1 PSI\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAt 20 GPM flow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e100% PP\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMeltblown polypropylene\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFilter Depth\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e233%\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003evs. standard cartridges\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eDGD Series Model Comparison\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Number\u003c\/th\u003e\n\u003cth\u003ePre-Filter Micron\u003c\/th\u003e\n\u003cth\u003ePost-Filter Micron\u003c\/th\u003e\n\u003cth\u003ePressure Drop\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDGD-2501\u003c\/td\u003e\n\u003ctd\u003e25 micron\u003c\/td\u003e\n\u003ctd\u003e1 micron\u003c\/td\u003e\n\u003ctd\u003e1 PSI @ 20 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDGD-5005\u003c\/td\u003e\n\u003ctd\u003e50 micron\u003c\/td\u003e\n\u003ctd\u003e5 micron\u003c\/td\u003e\n\u003ctd\u003e1 PSI @ 20 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDGD-7525\u003c\/td\u003e\n\u003ctd\u003e75 micron\u003c\/td\u003e\n\u003ctd\u003e25 micron\u003c\/td\u003e\n\u003ctd\u003e1 PSI @ 20 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 100% pure polypropylene meltblown construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003eChemical Resistance:\u003c\/strong\u003e Superior compatibility, not prone to bacterial attack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e Will not impart taste, odor, or color to filtered water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003eEffective Depth:\u003c\/strong\u003e 233% of standard spun or string-wound filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eDesigned for Big Blue Whole-House Systems\u003c\/h2\u003e\n\u003cp\u003eThe Pentek DGD Series filters are engineered for use in all standard 20\" Big Blue housings with 4.5\" diameter openings. The dual-gradient design makes these cartridges ideal for whole-house sediment filtration in residential, rural, municipal, and commercial applications where high particulate loads require extended service life. The outer 25-micron gradient layer captures larger particles and reduces the load on the inner 1-micron layer, allowing the filter to maintain consistent flow rates while achieving fine filtration. Compatible with potable water systems, well water applications, and any installation requiring sediment reduction down to 1 micron without sacrificing capacity or flow performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e The DGD-2501 (25\/1 micron) is the workhorse for well water and municipal pre-filtration. For lighter sediment loads or applications requiring only coarse filtration, the DGD-7525 (75\/25 micron) extends service intervals significantly while still providing effective protection for downstream equipment.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Single \/ 1 Micron","offer_id":35691771494562,"sku":"155360-43","price":65.0,"currency_code":"USD","in_stock":true},{"title":"Single \/ 5 Micron","offer_id":35691771527330,"sku":"155358-43","price":54.94,"currency_code":"USD","in_stock":true},{"title":"Single \/ 25 Micron","offer_id":35691771560098,"sku":"155356-43","price":52.55,"currency_code":"USD","in_stock":true},{"title":"Pack of 2 \/ 1 Micron","offer_id":42565640519851,"sku":"(2) x 155360-43","price":123.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 2 \/ 5 Micron","offer_id":42565640552619,"sku":"(2) x 155358-43","price":103.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 2 \/ 25 Micron","offer_id":42565640585387,"sku":"(2) x 155356-43","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 3 \/ 1 Micron","offer_id":42797437059243,"sku":"(3) x 155360-43","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 3 \/ 5 Micron","offer_id":42797437092011,"sku":"(3) x 155358-43","price":151.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 3 \/ 25 Micron","offer_id":42797437124779,"sku":"(3) x 155356-43","price":145.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 4 \/ 1 Micron","offer_id":42653808001195,"sku":"(4) x 155360-43","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 4 \/ 5 Micron","offer_id":42653808033963,"sku":"(4) x 155358-43","price":197.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 4 \/ 25 Micron","offer_id":42653808066731,"sku":"(4) x 155356-43","price":188.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-dgd-series-20-x-45-big-blue-dual-gradient-density-polypropylene-sediment-filter-586025.jpg?v=1759500177"},{"product_id":"aries-af-20-4010-bb-20x4-5-big-blue-mixed-bed-di-lowers-tds-filter","title":"Aries FilterWorks (AF-20-4010-BB) 20\" x 4.5\" Big Blue Mixed Bed Deionization (DI) Water Filter Cartridge - High-Purity Resin for TDS \u0026 Ionic Contaminant Removal - Semiconductor Grade, Made in USA","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eAries FilterWorks\u003c\/div\u003e\n\u003ch2\u003eAF-20-4010-BB 20\" x 4.5\" Big Blue Mixed Bed DI Cartridge\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eSemiconductor-grade deionization resin for ultra-pure water in whole house, industrial, and laboratory filtration systems\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eMixed Bed Ion Exchange\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eMade in USA\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eResinTech Resins\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e14-18 MΩ·cm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe AF-20-4010-BB combines cation and anion exchange resins in a 20\" x 4.5\" double-open-end cartridge to remove total dissolved solids, minerals, salts, and ionic contaminants from water. Designed for post-RO polishing, laboratory reagent preparation, industrial rinsing, and any application requiring resistivities up to 14-18 megohm-centimeters.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMedia\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eMixed Bed Ion Exchange Resins (ResinTech)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMicron Rating\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e25 micron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFlow Rate\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e0.5–2 GPM recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eService Life\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e1,000–5,000 gallons (varies by TDS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eTemperature\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e40–100°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003ePressure\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e0–100 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eEnd Cap Type\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eDouble Open End (DOE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eResistivity\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eUp to 14–18 MΩ·cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eAries FilterWorks (ResinTech division)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHousing and Application Fit\u003c\/h3\u003e\n\u003cp\u003eThe AF-20-4010-BB fits all standard 20\" Full Flow (Big Blue) housings with 4.5\" diameters, including models from Pentek, GE, Culligan, and other brands. Best used as a final polishing stage after reverse osmosis or softened water to achieve ultra-low TDS for aquariums, laboratory reagent prep, pharmaceutical rinsing, semiconductor fabrication, and medical-grade water systems. Monitor output TDS or resistivity and replace when breakthrough occurs or annually.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Aries Filter Works","offers":[{"title":"Default Title","offer_id":35470723088546,"sku":"AF-20-4010-BB","price":223.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536776552610-padded.jpg?v=1791926202"},{"product_id":"unicel-k-41130-b-20x4-5-big-blue-pleated-polypropylene-1-micron-sediment-filter","title":"Unicel (K-41130-B) 20\" x 4.5\" Pleated Polypropylene 1 Micron Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Unicel K-41130-B is a 20\" x 4.5\" pleated polypropylene sediment filter that removes particles down to 1 micron from well water, whole-house systems, and commercial applications. Its pleated design delivers high flow rates and extended service life, with the ability to be cleaned and reused multiple times.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Specifications\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" × 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBig Blue compatible\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFiltration Rating\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1 Micron\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFine sediment removal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMedia Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003ePleated Polypropylene\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eWashable \u0026amp; reusable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eEnd Caps\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eWhite\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMade in USA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eK-41130-B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003ePleated polypropylene sediment filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicron Rating\u003c\/td\u003e\n\u003ctd\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20 inches length × 4.5 inches diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard 20\" Big Blue and Big White housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaintenance\u003c\/td\u003e\n\u003ctd\u003eCleanable with garden hose, reusable multiple times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\u003ctd\u003eUnicel, USA-made with white end caps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Works\u003c\/h2\u003e\n\u003cp\u003eThe Unicel K-41130-B fits all standard 20-inch Big Blue and Big White filter housings with 4.5-inch diameters. Ideal for whole-house filtration systems, well water applications with high sediment loads, and commercial installations requiring reliable sediment reduction. The 1 micron rating effectively captures fine sand, silt, rust, and dirt particles. The pleated polypropylene construction provides superior surface area compared to spun or wound cartridges, resulting in better flow rates and longer service intervals before cleaning is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 The pleated design means you can clean this filter 3-5 times before replacement. When flow slows, remove the cartridge and spray from the inside out with a garden hose to dislodge trapped sediment. Let it dry completely before reinstalling.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":35470742093986,"sku":"K-41130-B","price":107.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/unicel-k-41130-b-20-x-45-pleated-polypropylene-1-micron-sediment-filter-386513.jpg?v=1791926337"},{"product_id":"unicel-k-40530-b-20x4-5-big-blue-pleated-polypropylene-5-micron-sediment-filter","title":"Unicel (K-40530-B) 20\" x 4.5\" Pleated Polypropylene 5 Micron Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Unicel K-40530-B is a 20\" x 4.5\" pleated polypropylene sediment filter rated at 5 micron, delivering 90% filtration efficiency for whole-house, commercial, and well water applications. Its pleated design maximizes surface area for extended filter life, high flow rates, and superior dirt-holding capacity compared to standard wound or spun cartridges.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eUnicel K-40530-B Filter Specifications\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" x 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBig Blue housing compatible\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMicron Rating\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e5 Micron\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eRemoves sediment and rust\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMedia Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003ePleated Polypropylene\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eCleanable and reusable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eEfficiency\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e90%\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eHigh adsorptive capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eService Life\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eExtended\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eReduced maintenance costs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eApplications\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eMulti-Purpose\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eResidential to industrial\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Construction \u0026amp; Performance\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eUnicel K-40530-B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Length\u003c\/td\u003e\n\u003ctd\u003e20 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5 inches (4-1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration Rating\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Construction\u003c\/td\u003e\n\u003ctd\u003ePleated polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration Efficiency\u003c\/td\u003e\n\u003ctd\u003e90% nominal efficiency\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Design\u003c\/td\u003e\n\u003ctd\u003eExtended surface area pleated construction for increased dirt-holding capacity and high flow rates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Works\u003c\/h2\u003e\n\u003cp\u003eThe Unicel K-40530-B is designed for whole-house, well water, and commercial filtration systems using 20\" x 4.5\" Big Blue housings. It effectively reduces sediment and rust in residential water supplies, and is suitable for industrial applications including edible oils, cosmetics, electronics, chemicals, plating solutions, reverse osmosis prefiltration, magnetic tape coatings, food and beverage processing, water and wastewater treatment, and aqueous solutions. This filter is compatible with Aqua Sun International WR-BB, FilterCor PE5X20BB, Harmsco HB-20-5W, HB-20-5, WB-HB-20-5W, WB-HB-20-5, HB-20-5W-HF, HB-20-5W-AM, and Purwater PP20-BB-2-S housings.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 The pleated design of the K-40530-B offers a significant advantage over standard cartridges: more surface area means longer intervals between changes and better flow rates under load. In most residential applications, this filter is cleanable and reusable, further extending its value and reducing long-term maintenance costs.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":35470742323362,"sku":"K-40530-B","price":65.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/unicel-k-40530-b-20-x-45-pleated-polypropylene-5-micron-sediment-filter-820094.jpg?v=1791926337"},{"product_id":"unicel-k-40430-b-20x4-5-big-blue-pleated-polypropylene-20-micron-sediment-filter","title":"Unicel (K-40430-B) 20\" x 4.5\" Pleated Polypropylene 20 Micron Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eUnicel K-40430-B\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Pleated Polypropylene Sediment Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eHigh-efficiency 20 micron filtration for Big Blue housings in commercial, whole-house, and well water applications\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e20 Micron Pleated\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e90% Efficiency\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eCleanable \u0026amp; Reusable\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eExtended Surface Area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Unicel K-40430-B is a 20-inch pleated polypropylene filter designed for high dirt-holding capacity and extended service life in demanding sediment applications. The pleated design provides greater surface area than standard cartridges, allowing higher flow rates and longer intervals between changes while capturing rust, sand, silt, and particulate down to 20 microns.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eK-40430-B Filter Cartridge Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20\" length x 4.5\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eMicron Rating\u003c\/td\u003e\n\u003ctd\u003e20 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eMedia Type\u003c\/td\u003e\n\u003ctd\u003ePleated polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eFiltration Efficiency\u003c\/td\u003e\n\u003ctd\u003e90% at rated micron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eEnd Cap\u003c\/td\u003e\n\u003ctd\u003eStandard Big Blue open\/closed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eMaintenance\u003c\/td\u003e\n\u003ctd\u003eCleanable and reusable in most applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eWhole-house, commercial, well water, RO prefiltration, industrial liquids, edible oils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCross-Reference \u0026amp; Housing Fit\u003c\/h3\u003e\n\u003cp\u003eThe K-40430-B fits standard 20-inch Big Blue filter housings with 4.5-inch diameter capacity. Direct cross-references include Aqua Sun International WR-BB, FilterCor PE20X20BB, Harmsco HB-20-20W and HB-20-20 series (including WB-HB-20-20W, WB-HB-20-20, HB-20-20W-HF, HB-20-20W-AM), and Purwater PP20-BB-2-S. Suitable for whole-house sediment filtration, commercial water treatment, well water applications, prefiltration ahead of reverse osmosis membranes, and industrial liquid processing including cosmetics, electronics, chemicals, plating solutions, magnetic tape coatings, food and beverage production, and aqueous solutions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":35470742749346,"sku":"K-40430-B","price":45.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/unicel-k-40430-b-20-x-45-pleated-polypropylene-20-micron-sediment-filter-179669.jpg?v=1791926337"},{"product_id":"unicel-k-40730-b-20x4-5-big-blue-pleated-polypropylene-50-micron-sediment-filter","title":"Unicel (K-40730-B) 20\" x 4.5\" Pleated Polypropylene 50 Micron Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Unicel K-40730-B is a 20\" x 4.5\" pleated polypropylene sediment filter designed for Big Blue housings, delivering 50 micron filtration with exceptional flow rates and a washable, reusable design. Its large surface area pleated construction provides extended service life for whole-house, well water, and commercial applications.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Specifications\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" x 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBig Blue standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFiltration Level\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e50 Micron\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eSediment removal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003ePolypropylene\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePleated construction\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDesign\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eWashable\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eReusable cartridge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eEnd Caps\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eWhite\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eUSA manufactured\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eHousing Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eBig Blue\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e\u0026amp; Big White\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eProduct Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eK-40730-B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eUnicel (Made in USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003ePleated polypropylene sediment filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicron Rating\u003c\/td\u003e\n\u003ctd\u003e50 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Dimensions\u003c\/td\u003e\n\u003ctd\u003e20 inches length x 4.5 inches diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaintenance\u003c\/td\u003e\n\u003ctd\u003eWashable with garden hose, reusable multiple times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Cap Color\u003c\/td\u003e\n\u003ctd\u003eWhite polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Works\u003c\/h2\u003e\n\u003cp\u003eThe Unicel K-40730-B fits standard 20-inch Big Blue and Big White filter housings, making it ideal for whole-house water filtration systems, well water treatment, and commercial applications requiring high flow rates and sediment removal. The pleated polypropylene design provides significantly more surface area than standard wound or spun cartridges, resulting in longer service intervals and better dirt-holding capacity. This 50 micron rating effectively captures sand, silt, rust, and larger particulate matter while maintaining excellent flow characteristics. When flow rates decrease or water quality begins to decline, simply remove the cartridge and spray clean with a garden hose to restore performance. The washable, reusable construction makes this an economical choice for applications with moderate to heavy sediment loads where frequent cartridge replacement would otherwise be costly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e Pleated filters like the K-40730-B can typically be washed 3-5 times before replacement is needed. Keep a spare cartridge on hand so you can rotate them during cleaning cycles, ensuring uninterrupted water service for your home or facility.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":35470743011490,"sku":"K-40730-B","price":40.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/unicel-k-40730-b-20-x-45-pleated-polypropylene-50-micron-sediment-filter-292877.jpg?v=1791926338"},{"product_id":"unicel-k-40630-b-20x4-5-big-blue-pleated-polypropylene-10-micron-sediment-filter","title":"Unicel (K-40630-B) 20\" x 4.5\" Pleated Polypropylene 10 Micron Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eUnicel K-40630-B\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Pleated Polypropylene \u003cem\u003e10 Micron Sediment Filter\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eReusable pleated cartridge for Big Blue housings with extended surface area and simple garden hose cleaning\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e10 Micron\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003ePleated Polypropylene\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eMade in USA\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eReusable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePleated design means more filtration surface and longer service life\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔄\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eReusable Construction\u003c\/h3\u003e\n\u003cp\u003ePleated polyester cloth can be cleaned and reused multiple times. When flow slows, rinse with a garden hose and reinstall.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📏\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eExtended Surface Area\u003c\/h3\u003e\n\u003cp\u003ePleated design provides significantly more filtration surface than standard cartridges, improving flow rate and dirt-holding capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e10 Micron Sediment Removal\u003c\/h3\u003e\n\u003cp\u003eCaptures sand, silt, rust, and particulate down to 10 microns. Ideal for well water, whole-house, and commercial applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🇺🇸\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eUnicel Quality\u003c\/h3\u003e\n\u003cp\u003eMade in the USA with white end caps and durable polypropylene media. Fits standard 20\" Big Blue and Big White housings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFits 20 inch Big Blue and Big White filter housings\u003c\/h3\u003e\n\u003cp\u003eThe Unicel K-40630-B is designed for any standard 20\" x 4.5\" Big Blue or Big White housing. Compatible with whole-house filtration systems, commercial water treatment setups, and well water applications requiring sediment reduction before carbon or softening stages.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eClean when flow slows, replace when washing no longer restores performance\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 1–3 months\u003c\/div\u003e\n\u003ch4\u003eRinse and Reuse\u003c\/h4\u003e\n\u003cp\u003eWhen water pressure drops or filtration performance declines, remove cartridge and spray clean with a garden hose. Reinstall and continue use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 6–12 months\u003c\/div\u003e\n\u003ch4\u003eFull Replacement\u003c\/h4\u003e\n\u003cp\u003eReplace the K-40630-B cartridge when rinsing no longer restores flow. Lifespan depends on sediment load and frequency of cleaning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏠\u003c\/div\u003e\n\u003ch4\u003eWhole-House Ready\u003c\/h4\u003e\n\u003cp\u003eLarge 4.5\" diameter handles high flow for residential and light commercial use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🚿\u003c\/div\u003e\n\u003ch4\u003eProtects Downstream Equipment\u003c\/h4\u003e\n\u003cp\u003eRemoves sediment before it reaches water heaters, appliances, or RO membranes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eLower Operating Cost\u003c\/h4\u003e\n\u003cp\u003eReusable design reduces replacement frequency and long-term filtration expense\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":35470743339170,"sku":"K-40630-B","price":59.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/unicel-k-40630-b-20-x-45-pleated-polypropylene-10-micron-sediment-filter-730648.jpg?v=1791926337"},{"product_id":"puret-bvb-series-20-x-4-5-spun-polypropylene-sediment-filter","title":"PureT - BVB Series - 20\" x 4.5\" Spun Polypropylene Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePureT BVB Series\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Spun Polypropylene Sediment Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eNSF 42 certified coreless sediment filtration for Big Blue housings\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eNSF 42 Certified\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eFDA CFR Title 21\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eMeltblown Polypropylene\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eCoreless Design\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe PureT BVB series sediment filter cartridge delivers economical pre-filtration for whole-house, commercial, and well water applications using standard 20\" Big Blue housings. Its four-layer coreless polypropylene construction captures sand, silt, rust, and scale particles down to the nominal micron rating without the structural waste of a rigid core.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFilter Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFilter Media\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eSpun Polypropylene (Meltblown)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMicron Ratings Available\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e1, 5, 10, 20, 50 micron (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eStructure\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e4-layer coreless design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eCertifications\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eNSF 42, FDA CFR Title 21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eRecommended Service Life\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e6 months (varies by water quality)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eWeight\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eLightweight construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eApplication Range\u003c\/h3\u003e\n\u003cp\u003eDesigned for standard 20\" Big Blue and Big Boy filter housings. Widely used as pre-filtration upstream of reverse osmosis systems and post-filtration downstream of GAC carbon filters. Common in whole-house systems, well water treatment, ice machines, commercial beverage and coffee equipment, film processing, analytical labs, and wineries. Compatible with both municipal and well water sources.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"PureT","offers":[{"title":"1 Micron \/ Single","offer_id":36742120079522,"sku":"BVB2000001","price":29.65,"currency_code":"USD","in_stock":true},{"title":"1 Micron \/ Case (Quantity of 6)","offer_id":41947221786795,"sku":"(6) x BVB2000001","price":161.73,"currency_code":"USD","in_stock":true},{"title":"5 Micron \/ Single","offer_id":36742120112290,"sku":"BVB2000005","price":27.99,"currency_code":"USD","in_stock":true},{"title":"5 Micron \/ Case (Quantity of 6)","offer_id":41947221819563,"sku":"(6) x BVB2000005","price":150.34,"currency_code":"USD","in_stock":true},{"title":"10 Micron \/ Single","offer_id":36742120145058,"sku":"BVB2000010","price":27.99,"currency_code":"USD","in_stock":true},{"title":"10 Micron \/ Case (Quantity of 6)","offer_id":41947221852331,"sku":"(6) x BVB2000010","price":150.34,"currency_code":"USD","in_stock":true},{"title":"20 Micron \/ Single","offer_id":36742120177826,"sku":"BVB2000020","price":27.99,"currency_code":"USD","in_stock":true},{"title":"20 Micron \/ Case (Quantity of 6)","offer_id":41947221885099,"sku":"(6) x BVB2000020","price":150.34,"currency_code":"USD","in_stock":true},{"title":"50 Micron \/ Single","offer_id":36742120210594,"sku":"BVB2000050","price":27.99,"currency_code":"USD","in_stock":true},{"title":"50 Micron \/ Case (Quantity of 6)","offer_id":41947221917867,"sku":"(6) x BVB2000050","price":150.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536867647650-padded.jpg?v=1777268743"},{"product_id":"pentek-r30-bb-20-x-4-5-big-blue-reusable-pleated-polyester-sediment-filter-30-micron","title":"Pentek - R30-20BB 20\" x 4.5\" Big Blue REUSABLE Pleated Polyester Sediment Filter - 30 Micron","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Big Blue Sediment Filter\u003c\/div\u003e\n\u003ch2\u003eR30-20BB 20\" x 4.5\" \u003cem\u003eReusable Pleated Polyester Filter\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eIndustrial-grade 30 micron sediment filtration with over 16 square feet of cleanable polyester media for whole house, well, and commercial applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e30 Micron\u003c\/span\u003e \u003cspan class=\"ro-badge\"\u003e20\" x 4.5\"\u003c\/span\u003e \u003cspan class=\"ro-badge\"\u003eReusable\u003c\/span\u003e \u003cspan class=\"ro-badge\"\u003eBig Blue\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBuilt for High-Volume Sediment Removal\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e♻️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eReusable and Cleanable\u003c\/h3\u003e\n\u003cp\u003eNon-woven polyester fabric can be removed, rinsed, and reinstalled multiple times, reducing long-term filtration costs for high-sediment applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📐\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eMaximum Surface Area\u003c\/h3\u003e\n\u003cp\u003eOver 16 square feet of pleated polyester media provides exceptional dirt-holding capacity and extended service intervals between cleanings\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eUnitized Construction\u003c\/h3\u003e\n\u003cp\u003eVinyl plastisol end caps fuse media, core, and gasket into a single piece. Sonically welded seam reduces bypass and improves filtration efficiency\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🛡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eChemical and Bacteria Resistant\u003c\/h3\u003e\n\u003cp\u003eDurable polyester media withstands chemical exposure and resists bacterial growth, suitable for residential, commercial, and industrial water systems\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePentek R30-20BB Technical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eR30-20BB (155430-43)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eFiltration Rating\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e30 Micron Nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eFilter Media\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eNon-Woven Pleated Polyester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eCore Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eEnd Cap Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eVinyl Plastisol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eSurface Area\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e16+ Square Feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e40°F to 145°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003ePressure Drop\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e1 PSI @ 10 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20\" x 4.5\" Big Blue Housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHousing Requirements\u003c\/h3\u003e\n\u003cp\u003eThe Pentek R30-20BB fits all standard 20 inch x 4.5 inch Big Blue filter housings. This includes Pentek Big Blue systems and equivalent housings from other manufacturers designed for 20\" x 4.5\" cartridges. Ensure your housing is rated for the flow rate and pressure requirements of your application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCleaning and Replacement Schedule\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 2-6 Months\u003c\/div\u003e\n\u003ch4\u003eRemove and Clean\u003c\/h4\u003e\n\u003cp\u003eRemove cartridge and rinse thoroughly under high-pressure water to remove accumulated sediment. Frequency depends on sediment load and water usage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAfter 3-5 Cleanings\u003c\/div\u003e\n\u003ch4\u003eInspect Media\u003c\/h4\u003e\n\u003cp\u003eCheck polyester pleats for embedded debris or deterioration. If rinsing no longer restores flow rate, replace the cartridge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e12-24 Months\u003c\/div\u003e\n\u003ch4\u003eReplace Cartridge\u003c\/h4\u003e\n\u003cp\u003eEven with regular cleaning, replace the R30-20BB annually in high-sediment environments or every two years in lighter-duty applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eWhole House Protection\u003c\/h4\u003e\n\u003cp\u003eProtects appliances, fixtures, and downstream filtration from sand, silt, and sediment\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eLower Operating Costs\u003c\/h4\u003e\n\u003cp\u003eReusable design reduces replacement frequency and long-term filtration expenses\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⚙️\u003c\/div\u003e\n\u003ch4\u003eHigh Flow Capacity\u003c\/h4\u003e\n\u003cp\u003eBig Blue size handles up to 10 GPM with minimal pressure drop for demanding applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏭\u003c\/div\u003e\n\u003ch4\u003eCommercial Grade\u003c\/h4\u003e\n\u003cp\u003eDurable construction suitable for residential, commercial, and light industrial water systems\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35471230927010,"sku":"155430-43","price":73.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-r30-bb-20-x-45-big-blue-reusable-pleated-polyester-sediment-filter-30-micron-599598.jpg?v=1791926500"},{"product_id":"empty-refillable-cartridge-20-x-4-5-white","title":"Empty Refillable Cartridge 20\" x 4.5\" White","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eWatts RC-C-BB--20-50\u003c\/div\u003e\n\u003ch2\u003eEmpty Refillable Cartridge \u003cem\u003e20\" x 4.5\" White\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eReusable canister for custom media applications in Big Blue housing systems\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eRefillable\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e50 Micron Foam Pad\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e155 Cubic Inches\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFill It With What You Need\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔄\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eReusable Design\u003c\/h3\u003e\n\u003cp\u003eRefill and reuse instead of replacing. The Watts RC-C-BB--20-50 accepts any granular or specialty media you need for custom filtration applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📏\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eBig Blue Standard\u003c\/h3\u003e\n\u003cp\u003eFits all standard 20\" x 4.5\" Big Blue housings. Direct replacement for any system using this size—no adapters or modifications needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e155 Cubic Inch Capacity\u003c\/h3\u003e\n\u003cp\u003eLarge internal volume holds enough media for effective treatment. Space for carbon, resin, specialty filtration media, or blended combinations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🛡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eFoam Pad Included\u003c\/h3\u003e\n\u003cp\u003e50 micron foam pad prevents media migration and channeling. Keeps your fill material contained and ensures even water distribution through the cartridge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFits Standard 20\" Big Blue Housings\u003c\/h3\u003e\n\u003cp\u003eThis empty refillable cartridge works with any standard 20\" x 4.5\" Big Blue filter housing. Compatible with Pentair, Pentek, Culligan, iSpring, and other manufacturers using the BB housing standard. The white body is food-grade and rated for potable water when filled with appropriate media.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eAPPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhat You Can Fill It With\u003c\/h3\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003ch4\u003eGranular Activated Carbon\u003c\/h4\u003e\n\u003cp\u003eGAC for chlorine and VOC removal\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003ch4\u003eIon Exchange Resin\u003c\/h4\u003e\n\u003cp\u003eSoftening or specialty resins\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003ch4\u003eCalcite or Corosex\u003c\/h4\u003e\n\u003cp\u003epH adjustment media\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003ch4\u003eKDF Media\u003c\/h4\u003e\n\u003cp\u003eHeavy metal reduction\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003ch4\u003eSpecialty Blends\u003c\/h4\u003e\n\u003cp\u003eCustom combinations for specific contaminants\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eCost Effective\u003c\/h4\u003e\n\u003cp\u003eBuy media in bulk and refill as needed instead of purchasing pre-filled cartridges\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🎯\u003c\/div\u003e\n\u003ch4\u003eApplication Specific\u003c\/h4\u003e\n\u003cp\u003eTailor your filtration to your exact water chemistry with custom media loads\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔧\u003c\/div\u003e\n\u003ch4\u003eEasy to Refill\u003c\/h4\u003e\n\u003cp\u003eSimple screw-cap design allows quick media changes when performance drops\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":35471353020578,"sku":"RC-W-BB-20","price":50.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/empty-refillable-cartridge-20-x-45-white-757558.jpg?v=1791926682"},{"product_id":"puret-hqcbc-series-20-x-4-5-coconut-carbon-block-filter","title":"PureT - CBCM Series -  20\" x 4.5\" Chloramine Reduction Water Filter - NSF Certified - Carbon Block Chloramine Reduction Filter 0.5 Micron","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePureT CBCM Series\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Chloramine Reduction Carbon Block Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eNSF certified coconut shell carbon designed for chloramine removal and RO membrane protection\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eNSF Certified\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e0.5 Micron\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eCoconut Shell Carbon\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e6 Month Service Life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe PureT CBCM Series filter uses compressed coconut shell activated carbon to target chloramines, the disinfectant that destroys reverse osmosis membranes and persists where standard carbon falls short. At 0.5 micron rating, it also removes chlorine, VOCs, pesticides, and soluble organic compounds while protecting downstream filtration equipment.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCatalytic Carbon Block Filtration\u003c\/h3\u003e\n\u003cdiv class=\"stage-pipeline\"\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eCONTACT\u003c\/span\u003e\n\u003ch3\u003eWater Enters Carbon Block\u003c\/h3\u003e\n\u003cp\u003eRaw water flows into the densely compressed coconut shell carbon block, initiating contact across millions of surface pores and catalytic sites.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eCATALYSIS\u003c\/span\u003e\n\u003ch3\u003eChloramine Breakdown\u003c\/h3\u003e\n\u003cp\u003eCatalytic carbon breaks the chloramine bond, separating ammonia and chlorine through advanced chemisorption rather than simple adsorption used by standard activated carbon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eADSORPTION\u003c\/span\u003e\n\u003ch3\u003eOrganic Compound Removal\u003c\/h3\u003e\n\u003cp\u003eActivated carbon captures VOCs, pesticides, dioxins, chloroform, and petrochemicals, while removing residual chlorine for improved taste and odor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e4\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eFILTRATION\u003c\/span\u003e\n\u003ch3\u003eFine Particle Retention\u003c\/h3\u003e\n\u003cp\u003eThe 0.5 micron rating provides mechanical filtration of fine sediment and particulates, delivering clean water that protects RO membranes and downstream equipment.\u003c\/p\u003e\n\u003cspan class=\"stage-part\"\u003eService life: 6 months typical\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eStandard 20\" Big Blue Housings\u003c\/h3\u003e\n\u003cp\u003eThe PureT CBCM filter fits all standard 20\" x 4.5\" filter housings commonly used in whole-house systems, commercial applications, well water treatment, and point-of-use reverse osmosis installations. Ideal for pre-filtration ahead of RO membranes in municipal water systems where chloramines are used as a disinfectant. Replace every 6 months or sooner depending on source water quality and flow volume.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"PureT","offers":[{"title":"Default Title","offer_id":36742819217570,"sku":"CBCM-4520-0.5","price":126.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536940884130-padded.jpg?v=1777268798"},{"product_id":"puret-sc-series-20-x-4-5-big-blue-string-wound-cartridge-filter","title":"PureT - SC Series - 20\" x 4.5\" Big Blue String Wound Cartridge Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n  \n  \u003cdiv class=\"ro-callout\"\u003e\n    The PureT SC Series 20\" x 4.5\" String Wound Cartridge delivers true depth filtration with exceptional dirt-holding capacity across residential, commercial, and well water applications. Engineered from 100% polypropylene using a continuous-winding process, this filter handles aggressive chemistries and temperature extremes up to 120°F without media migration.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003ePureT SC-20SW-BP Technical Details\u003c\/h2\u003e\n    \u003ctable class=\"specs-table\"\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimensions\u003c\/td\u003e\n        \u003ctd\u003e20\" x 4.5\"\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFilter Media\u003c\/td\u003e\n        \u003ctd\u003ePolypropylene String Wound\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMicron Ratings Available\u003c\/td\u003e\n        \u003ctd\u003e1, 5, 10, 50 micron\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMaximum Temperature\u003c\/td\u003e\n        \u003ctd\u003e120°F\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeight\u003c\/td\u003e\n        \u003ctd\u003e3.5 lbs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConstruction\u003c\/td\u003e\n        \u003ctd\u003eOne-piece continuous wind, FDA and Non-FDA available\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eChemical Resistance\u003c\/td\u003e\n        \u003ctd\u003eAcids, alkalis, oxidizing agents, organic solvents\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eRecommended Filter Life\u003c\/td\u003e\n        \u003ctd\u003e6 months (varies by water quality)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eFilter Replacement Process\u003c\/h2\u003e\n    \u003col class=\"install-steps\"\u003e\n      \u003cli\u003eShut off water supply and relieve system pressure by opening a downstream faucet\u003c\/li\u003e\n      \u003cli\u003eUnscrew the 20\" Big Blue housing sump using a filter wrench, then remove the old cartridge\u003c\/li\u003e\n      \u003cli\u003eClean the housing interior and o-ring sealing surfaces with mild detergent, rinse thoroughly\u003c\/li\u003e\n      \u003cli\u003eInsert the new PureT SC Series cartridge, ensuring proper seating in the housing base\u003c\/li\u003e\n      \u003cli\u003eLubricate the o-ring with food-grade silicone grease, hand-tighten the sump, then slowly turn water back on and check for leaks\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eApplications \u0026amp; Housing Fit\u003c\/h2\u003e\n    \u003cp\u003eThe PureT SC-20SW-BP cartridge fits all standard 20\" x 4.5\" Big Blue filter housings and is designed for whole-house, well water, and commercial sediment filtration. This filter excels in pre-membrane filtration, plating solutions, mineral acids, caustic soda, organic solvents, potable water, demineralized water, and photographic solutions. Available micron ratings (1, 5, 10, 50) allow customization for particle removal from coarse sediment to fine pre-RO filtration. The polypropylene construction resists micro-organism growth and can be incinerated to trace ash.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pro-tip\"\u003e\n    🔧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Choose your micron rating based on application: 50 micron for well water pre-filtration and heavy sediment, 10 or 5 micron for whole-house systems, and 1 micron for reverse osmosis pre-filtration or fine particulate removal. Replace when flow rate drops noticeably or every 6 months, whichever comes first.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"PureT","offers":[{"title":"1 Micron","offer_id":37136722165931,"sku":"SC-20SW-BP-1","price":29.0,"currency_code":"USD","in_stock":true},{"title":"5 Micron","offer_id":37136722198699,"sku":"SC-20SW-BP-5","price":29.0,"currency_code":"USD","in_stock":true},{"title":"10 Micron","offer_id":37136722231467,"sku":"SC-20SW-BP-10","price":29.0,"currency_code":"USD","in_stock":true},{"title":"50 Micron","offer_id":43942371066027,"sku":"SC-20SW-BP-50","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/puret-sc-series-20-x-45-big-blue-string-wound-cartridge-filter-378461.jpg?v=1791926682"},{"product_id":"puret-scpt-series-20-x-4-5-pleated-filter","title":"PureT - SCPT Series - 20\" x 4.5\" Pleated Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePureT USA - SCPT Series\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" \u003cem\u003ePleated Sediment Filter\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eReusable polyester pleated cartridge engineered for high-flow whole house, commercial, and well water applications. Available in 1, 5, 10, 20, and 30 micron ratings.\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eCleanable \u0026amp; Reusable\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eNo Binders or Additives\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eHigh Dirt Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBuilt for demanding applications where disposable filters fail\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔄\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eCleanable Construction\u003c\/h3\u003e\n\u003cp\u003eDurable polyester fabric can be rinsed and reused multiple times. No surface blinding, no flow degradation. Lower operating cost than disposable cartridges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eLarge Dirt Holding Capacity\u003c\/h3\u003e\n\u003cp\u003eExtended pleated surface area captures more sediment before cleaning is required. Longer service intervals in high-turbidity well and commercial applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚡\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eMinimal Pressure Drop\u003c\/h3\u003e\n\u003cp\u003eDesigned for high-flow performance with low restriction. Maintains consistent pressure across whole house systems even at peak demand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eFive Micron Options\u003c\/h3\u003e\n\u003cp\u003eChoose 1, 5, 10, 20, or 30 micron ratings to match your water conditions. No binders or additives means the rating stays true over the filter's lifetime.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eStandard 20\" x 4.5\" housings\u003c\/h3\u003e\n\u003cp\u003eThe PureT SCPT series fits any standard 20-inch big blue filter housing with 4.5-inch diameter capacity. Common in whole house systems, commercial pre-filtration setups, and well water treatment. Model numbers include SC-20PT-BP-1, SC-20PT-BP-5, SC-20PT-BP-10, SC-20PT-BP-20, and SC-20PT-BP-30 depending on micron rating selected.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eClean when pressure drops 10 PSI or flow decreases\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e3-6 months\u003c\/div\u003e\n\u003ch4\u003eHigh-Sediment Well Water\u003c\/h4\u003e\n\u003cp\u003eInspect and clean monthly if source water has heavy turbidity. Rinse under running water, soak in filter cleaner if needed, reinstall when dry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e6-12 months\u003c\/div\u003e\n\u003ch4\u003eMunicipal or Low-Sediment Sources\u003c\/h4\u003e\n\u003cp\u003eCheck quarterly. Clean when gauge shows pressure drop. Most users get 3-5 cleanings before replacement is necessary.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e12-18 months\u003c\/div\u003e\n\u003ch4\u003eReplacement Interval\u003c\/h4\u003e\n\u003cp\u003eReplace the SCPT cartridge when cleaning no longer restores flow or when pleats show visible wear or tearing. Typical lifespan is 2-3 years with proper maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏭\u003c\/div\u003e\n\u003ch4\u003eCommercial Grade\u003c\/h4\u003e\n\u003cp\u003eBuilt for restaurants, car washes, and industrial pre-filtration\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eWell Water Ready\u003c\/h4\u003e\n\u003cp\u003eHandles sand, silt, and sediment that clogs standard spun cartridges\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e♻️\u003c\/div\u003e\n\u003ch4\u003eLower Cost Per Gallon\u003c\/h4\u003e\n\u003cp\u003eReusable design cuts filter replacement costs by 60-80% annually\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🇺🇸\u003c\/div\u003e\n\u003ch4\u003ePureT USA Quality\u003c\/h4\u003e\n\u003cp\u003eManufactured to NSF standards with consistent quality control\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"PureT","offers":[{"title":"1 Micron","offer_id":36743158825122,"sku":"SC-20PT-BP-1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"5 Micron","offer_id":36743158857890,"sku":"SC-20PT-BP-5","price":25.58,"currency_code":"USD","in_stock":true},{"title":"10 Micron","offer_id":36743158890658,"sku":"SC-20PT-BP-10","price":25.58,"currency_code":"USD","in_stock":true},{"title":"20 Micron","offer_id":36743195361442,"sku":"SC-20PT-BP-20","price":25.58,"currency_code":"USD","in_stock":true},{"title":"30 Micron","offer_id":42581053276331,"sku":"SC-20PT-BP-30","price":25.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/puret-scpt-series-20-x-45-pleated-filter-115463.png?v=1762460359"},{"product_id":"pentek-155281-43-20x4-5-bbf1-20mb-fda-mixed-bed-di-resin-filter","title":"Pentek - BBF1-20MB - 20\" x 4.5\" Mixed Bed DI Resin Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Pentek BBF1-20MB is a 20\" x 4.5\" mixed bed deionization resin cartridge engineered to remove dissolved solids and reduce total organic carbon (TOC) for high-purity water applications. With a 1,850 grain capacity and semiconductor-grade, FDA-compliant resin, this filter delivers low TDS and TOC output at 1.25 GPM for pharmaceutical, laboratory, and industrial use.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003ePerformance \u0026amp; Capacity\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eGrain Capacity\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1,850 grains\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e120,000 total TDS removal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFlow Rate\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1.25 GPM\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMaximum rated flow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" x 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFits Big Blue housings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePressure Drop\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1.1 psi\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAt 1.25 GPM flow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTemperature\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e40°F – 100°F\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eOperating range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eResin Grade\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eSemiconductor\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFDA-compliant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eConstruction \u0026amp; Materials\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Media\u003c\/td\u003e\n\u003ctd\u003eMixed bed deionization resin (cation + anion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShell Material\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Caps\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePre\/Post Filters\u003c\/td\u003e\n\u003ctd\u003ePolypropylene mesh layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGaskets\u003c\/td\u003e\n\u003ctd\u003eBuna-N (nitrile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eBBF1-20MB (Pentek 155281-43)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003e20\" Big Blue filter housings (4.5\" diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Works Best\u003c\/h2\u003e\n\u003cp\u003eThe Pentek BBF1-20MB is designed for whole-house, commercial, and industrial deionization applications where high-purity water is required. Common installations include pharmaceutical and medical laboratories, cosmetics manufacturing, circuit board printing, steam processors, humidification systems, recirculating and cooling towers, power generation equipment, lasers, jet water sprayers, and boiler make-up water systems. This filter should be installed in a dedicated 20\" x 4.5\" Big Blue housing and is typically used after carbon and sediment pre-filtration to protect the resin bed. The mixed bed resin combines cation and anion exchange for comprehensive ion removal and low conductivity output.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Always pre-filter your feed water with sediment and carbon stages before DI resin cartridges. This extends resin life dramatically by removing particulates and chlorine that would otherwise exhaust the bed prematurely. Monitor TDS with a meter and replace the cartridge when conductivity rises above your target threshold.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35471368224930,"sku":"155281-43","price":234.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-bbf1-20mb-20-x-45-mixed-bed-di-resin-filter-440137.jpg?v=1759500683"},{"product_id":"kx-technologies-fxb20cl2-20-x-4-5-filtrex-ecocarb-greenblock-cl2-10-micron-carbon-block-chlorine-filter","title":"KX Technologies - FXB20CL2 - 20\" x 4.5\" Filtrex Ecocarb GreenBlock CL2 - 10 Micron - Carbon Block Chlorine Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe KX Technologies FXB20CL2 Filtrex Ecocarb GreenBlock delivers NSF-certified chlorine, taste, and odor reduction using high-performance coconut shell carbon in a 20\" x 4.5\" format built for whole-house and commercial applications. This 10 micron carbon block filter handles up to 7 gpm with exceptional dirt holding capacity and a 34,000 gallon service life, all while reducing greenhouse gas emissions through KX's patented greencarbon manufacturing process.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFXB20CL2 Technical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eFXB20CL2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" (Big Blue)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration Rating\u003c\/td\u003e\n\u003ctd\u003e10 Micron Carbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Rate\u003c\/td\u003e\n\u003ctd\u003e7 gpm (6.0 psi drop)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e34,000 gallons @ 7 gpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Type\u003c\/td\u003e\n\u003ctd\u003eNSF 61 Coconut Shell Greencarbon PAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContaminant Removal\u003c\/td\u003e\n\u003ctd\u003eChlorine, Taste, Odor, VOCs, Sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eNSF 42, NSF 53, WQA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eReplacing Your GreenBlock Filter\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eShut off water supply and relieve system pressure by opening a downstream faucet\u003c\/li\u003e\n\u003cli\u003eUnscrew the Big Blue housing using a filter wrench, remove the old cartridge, and clean the housing and o-ring\u003c\/li\u003e\n\u003cli\u003eInsert the FXB20CL2 cartridge vertically into the housing, ensuring it seats properly on the center post\u003c\/li\u003e\n\u003cli\u003eApply food-grade lubricant to the o-ring, reassemble the housing, and tighten hand-tight plus a quarter turn with the wrench\u003c\/li\u003e\n\u003cli\u003eTurn on water slowly, check for leaks, and flush the filter for 3-5 minutes before use\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eSystem Requirements\u003c\/h2\u003e\n\u003cp\u003eThe FXB20CL2 fits all standard 20\" x 4.5\" Big Blue filter housings with a 1\" or 1.5\" NPT port configuration. This filter is designed for whole-house chlorinated municipal water systems, commercial applications, and well water installations where chlorine taste and odor removal is required alongside sediment filtration. The GreenBlock's coconut shell carbon offers higher micropore density than coal-based alternatives, making it particularly effective for chlorine and VOC reduction in high-flow residential and light commercial settings.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Coconut shell carbon blocks like the FXB20CL2 perform best when inlet water temperature stays below 100°F. If you're installing on a hot water line or in a location with high ambient temperatures, consider adding a pre-filter sediment stage to extend the GreenBlock's working life and maintain consistent chlorine reduction throughout its 34,000 gallon capacity.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Filtrex","offers":[{"title":"Default Title","offer_id":35471471444130,"sku":"FXB20CL2","price":120.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/kx-technologies-fxb20cl2-20-x-45-filtrex-ecocarb-greenblock-cl2-10-micron-carbon-block-chlorine-filter-493782.jpg?v=1791926760"},{"product_id":"aries-af-20-3695-bb-20x4-5-big-blue-arsenic-removal-filter","title":"Aries (AF-20-3695-BB) 20\" x 4.5\" Big Blue Arsenic Removal Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Aries AF-20-3695-BB is a 20\" x 4.5\" Big Blue arsenic removal cartridge that uses ResinTech ASM-10-HP resin media to reduce arsenic to EPA-compliant levels below 10 ppb. With an 8,000-gallon capacity and effectiveness across the full pH range of potable water, this filter is engineered for point-of-use applications where arsenic contamination is a concern.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCore Performance Data\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCartridge Dimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" × 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBig Blue standard fit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMedia Technology\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eASM-10-HP\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eResinTech selective resin\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eArsenic Reduction\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eBelow 10 ppb\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eEPA compliance standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eService Capacity\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e8,000 gal\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eTypical service life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFlow Rate\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.10–1.60 GPM\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eOperating range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003epH Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eFull spectrum\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eEffective at any pH\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eAF-20-3695-BB Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eAF-20-3695-BB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCartridge Size\u003c\/td\u003e\n\u003ctd\u003e20 inch x 4.5 inch (Big Blue)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Type\u003c\/td\u003e\n\u003ctd\u003eResinTech ASM-10-HP arsenic-selective strong anion resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Rate Range\u003c\/td\u003e\n\u003ctd\u003e0.10 GPM (minimum operating) to 1.60 GPM (maximum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Capacity\u003c\/td\u003e\n\u003ctd\u003e8,000 gallons (typical, varies with feedwater chemistry)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArsenic Reduction Target\u003c\/td\u003e\n\u003ctd\u003eLess than 10 ppb (EPA compliance for potable water)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective pH Range\u003c\/td\u003e\n\u003ctd\u003eFull range of potable water (no pH adjustment required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Works\u003c\/h2\u003e\n\u003cp\u003eThe Aries AF-20-3695-BB is designed for standard 20-inch Big Blue filter housings and is ideal for point-of-use arsenic removal in residential and light commercial applications. It fits any housing rated for 20\" x 4.5\" cartridges and is best suited for systems where arsenic contamination has been confirmed through water testing. The ASM-10-HP resin media works effectively regardless of water pH, making it versatile for a wide range of source water conditions including wells and municipal supplies with known arsenic issues. This is a specialty filter engineered specifically for arsenic reduction, not a general-purpose sediment or carbon cartridge.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 Arsenic is colorless, tasteless, and odorless—you cannot detect it without testing. If your water source has tested positive for arsenic, verify removal performance with periodic lab testing and replace the cartridge before reaching the 8,000-gallon capacity limit to maintain EPA compliance.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Aries Filter Works","offers":[{"title":"Default Title","offer_id":35471867609250,"sku":"AF-20-3695-BB","price":587.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/aries-af-20-3695-bb-20-x-45-big-blue-arsenic-removal-filter-610748.jpg?v=1791926941"},{"product_id":"watts-fpmb-series-20-x-4-5-flow-pro-melt-blown-sediment-filter","title":"Watts - FPMB Series - 20\" x 4.5\" Flow-Pro Melt Blown Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eWatts FPMB Series\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" \u003cem\u003eFlow-Pro Melt Blown Sediment Filter\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003ePolypropylene melt blown construction for reliable sediment removal in residential and commercial applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eFood Grade\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eHigh Dirt Capacity\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eChemical Resistant\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eEngineered for consistent sediment removal\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🧬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eMelt Blown Polypropylene\u003c\/h3\u003e\n\u003cp\u003ePure thermally bonded construction creates a depth filter with no binders or additives that could leach into your water\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eHigh Dirt Holding\u003c\/h3\u003e\n\u003cp\u003eGraduated density design traps sediment throughout the entire filter depth, extending service life and maximizing capacity\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🌡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eTemperature Tolerant\u003c\/h3\u003e\n\u003cp\u003eRated to 140°F for compatibility with hot water applications and thermal sanitization cycles\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eChemical Resistance\u003c\/h3\u003e\n\u003cp\u003ePolypropylene withstands exposure to chlorine, acids, and other water treatment chemicals without degradation\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚡\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eFlow-Pro Design\u003c\/h3\u003e\n\u003cp\u003eOptimized for flow rates from 2-8 GPM depending on micron rating, balancing filtration efficiency with pressure drop\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" length x 4.5\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMelt blown polypropylene (food grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140°F \/ 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 PSID\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-8 GPM (varies by micron rating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChange-Out\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRecommended at 30 PSID pressure drop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndividually shrink wrapped\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFits standard 20\" x 4.5\" Big Blue housings\u003c\/h3\u003e\n\u003cp\u003eThe Watts FPMB Series is designed for use in all standard 20-inch Big Blue filter housings with 4.5-inch inner diameter. Compatible with Watts housings and equivalent systems from other manufacturers. Available in multiple micron ratings for pre-filtration of reverse osmosis systems, beverage equipment, electronics manufacturing, plating solutions, and potable water applications. Available in Standard, Full-Flow, and grooved configurations depending on your specific application requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eReplacement schedule\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 3-6 Months\u003c\/div\u003e\n\u003ch4\u003eResidential Use\u003c\/h4\u003e\n\u003cp\u003eReplace when pressure drops 30 PSI or water flow noticeably decreases. Sediment load and water quality determine actual service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 1-3 Months\u003c\/div\u003e\n\u003ch4\u003eCommercial \/ High-Volume\u003c\/h4\u003e\n\u003cp\u003eMonitor pressure differential frequently in commercial applications. Heavy sediment loads require more frequent replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAs Needed\u003c\/div\u003e\n\u003ch4\u003eRO Pre-Filtration\u003c\/h4\u003e\n\u003cp\u003eReplace before pressure drop impacts RO membrane performance. Protecting downstream equipment is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eNo Leachables\u003c\/h4\u003e\n\u003cp\u003eFood grade polypropylene with no binders or adhesives\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eCost Effective\u003c\/h4\u003e\n\u003cp\u003eAffordable protection for expensive downstream equipment\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔄\u003c\/div\u003e\n\u003ch4\u003eWide Application Range\u003c\/h4\u003e\n\u003cp\u003eMultiple micron ratings for varied filtration needs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eWatts Quality\u003c\/h4\u003e\n\u003cp\u003eManufactured to consistent specifications by a trusted brand\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Watts","offers":[{"title":"1 Micron","offer_id":40599374626987,"sku":"FPMB-BB1-20","price":80.04,"currency_code":"USD","in_stock":true},{"title":"5 Micron","offer_id":40599374659755,"sku":"FPMB-BB5-20","price":65.56,"currency_code":"USD","in_stock":true},{"title":"20 Micron","offer_id":40599374692523,"sku":"FPMB-BB20-20","price":65.56,"currency_code":"USD","in_stock":true},{"title":"50 Micron","offer_id":40599374725291,"sku":"FPMB-BB50-20","price":67.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/watts-fpmb-series-20-x-45-flow-pro-melt-blown-sediment-filter-225099.jpg?v=1791926942"},{"product_id":"aries-af-20-2014-bb-20-x-4-5-4-lb-kdf-55-gac-filter","title":"Aries (AF-20-2014-BB) 20\" x 4.5\" (4 lb) KDF-55-GAC Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Aries AF-20-2014-BB combines 4 pounds of KDF-55 with granular activated carbon in a 20\" x 4.5\" cartridge designed for whole-house and commercial applications requiring heavy metal reduction, chlorine removal, and extended filter life. This dual-media filter delivers up to 85,000 gallons of capacity with bacteriostatic properties that control microorganism growth throughout the filter's service life.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCore Performance Data\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" × 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eBig Blue cartridge size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMedia Weight\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e4 lb\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eKDF-55 and GAC blend\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eOperating Flow\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e3 GPM\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e5 GPM maximum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCapacity\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e85,000 gal\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eTypical service life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMedia Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eKDF-55 \/ GAC\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eRedox and adsorption\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eModel Number\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eAF-20-2014-BB\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAries Filter Works\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Construction \u0026amp; Chemistry\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAries Filter Works\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Media\u003c\/td\u003e\n\u003ctd\u003eKDF-55 process media (high-purity copper-zinc alloy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Media\u003c\/td\u003e\n\u003ctd\u003eGranular Activated Carbon (GAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration Method\u003c\/td\u003e\n\u003ctd\u003eOxidation-reduction (redox) + catalytic adsorption\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget Contaminants\u003c\/td\u003e\n\u003ctd\u003eChlorine, heavy metals (lead, mercury, copper), hydrogen sulfide, taste, odor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacteriostatic Properties\u003c\/td\u003e\n\u003ctd\u003eKDF media inhibits bacteria, algae, and fungi growth in filter bed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e40°F – 100°F (optimal performance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere This Filter Works\u003c\/h2\u003e\n\u003cp\u003eThe AF-20-2014-BB is designed for standard 20\" x 4.5\" Big Blue filter housings used in whole-house systems, well water applications, and commercial installations. The dual-media construction makes it ideal for municipal water with chlorine and heavy metal concerns, as well as well water requiring iron and hydrogen sulfide reduction when used with appropriate pre-filtration. KDF-55 extends the activated carbon's effective life by handling oxidizable contaminants first, allowing the GAC to focus on taste, odor, and organic compound removal. Compatible with most brands of Big Blue housings including Pentek, Culligan, and GE.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e KDF media works best at water temperatures above 60°F and performs redox reactions more efficiently than carbon alone. If you're on well water with iron or sulfide issues, use a sediment pre-filter to protect the media bed and maximize the 85,000-gallon service life.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Aries Filter Works","offers":[{"title":"Default Title","offer_id":35472281075874,"sku":"AF-20-2014-BB","price":215.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537090535586-padded.jpg?v=1777256944"},{"product_id":"aries-af-20-2214-bb-20-x-4-5-4-lb-kdf-85-gac-filter","title":"Aries (AF-20-2214-BB) 20\" x 4.5\" (4 lb) KDF-85-GAC Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eAries Filter Works\u003c\/div\u003e\n\u003ch2\u003eAries \u003cem\u003eAF-20-2214-BB\u003c\/em\u003e 20\" x 4.5\" KDF-85\/GAC Filter\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eIndustrial-grade filtration for iron, hydrogen sulfide, and bacterial control in whole-house and commercial well water applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e4 lb KDF-85 Media\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" x 4.5\" Big Blue\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eCoconut Shell GAC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eRedox chemistry meets activated carbon for complete well water treatment\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚛️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eKDF-85 Redox Process\u003c\/h3\u003e\n\u003cp\u003eFour pounds of KDF-85 media removes hydrogen sulfide and reduces iron through oxidation-reduction chemistry and mechanical filtration, handling the heavy lifting before carbon gets involved\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🥥\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eResinTech Coconut GAC\u003c\/h3\u003e\n\u003cp\u003eGranular activated carbon from coconut shells provides exceptional adsorption of organic contaminants, taste, and odor compounds after KDF pre-treatment extends its service life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🦠\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eBacteriostatic Protection\u003c\/h3\u003e\n\u003cp\u003eKDF media naturally inhibits bacterial growth inside the filter cartridge, preventing biofilm formation and maintaining system hygiene between changeouts\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🏭\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eBig Blue Capacity\u003c\/h3\u003e\n\u003cp\u003eThe 20\" x 4.5\" format delivers commercial-grade flow rates and extended service intervals for whole-house and light commercial installations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eStandard 20-inch Big Blue housings\u003c\/h3\u003e\n\u003cp\u003eThe Aries AF-20-2214-BB fits all standard 20\" x 4.5\" Big Blue filter housings with 1\" or 1.5\" NPT ports. Designed for well water applications, whole-house systems, and commercial installations where iron and hydrogen sulfide are present. Works downstream of sediment pre-filtration for best results.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eReplacement schedule\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e6-12 months\u003c\/div\u003e\n\u003ch4\u003eTypical Replacement\u003c\/h4\u003e\n\u003cp\u003eReplace when iron breakthrough or hydrogen sulfide odor returns, typically between 6 and 12 months depending on water chemistry and daily usage volume\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e3-6 months\u003c\/div\u003e\n\u003ch4\u003eHigh Iron\/H₂S Levels\u003c\/h4\u003e\n\u003cp\u003eFor well water with elevated iron or hydrogen sulfide concentrations, monitor performance monthly and replace when reduction efficiency drops\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAs needed\u003c\/div\u003e\n\u003ch4\u003ePressure Monitoring\u003c\/h4\u003e\n\u003cp\u003eTrack pressure drop across the filter housing. A 10+ PSI increase signals media exhaustion or fouling and indicates replacement is due\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔧\u003c\/div\u003e\n\u003ch4\u003eDrop-In Replacement\u003c\/h4\u003e\n\u003cp\u003eNo modifications required for standard 20\" Big Blue housings\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eCost-Effective Treatment\u003c\/h4\u003e\n\u003cp\u003eRedox chemistry eliminates the need for chemical oxidizers or backwashing systems\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏡\u003c\/div\u003e\n\u003ch4\u003eWhole-House Protection\u003c\/h4\u003e\n\u003cp\u003eRemoves iron staining and sulfur odors at the point of entry\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🌊\u003c\/div\u003e\n\u003ch4\u003eWell Water Specialist\u003c\/h4\u003e\n\u003cp\u003ePurpose-built for the challenges of private well and rural water supplies\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Aries Filter Works","offers":[{"title":"Default Title","offer_id":35472287924386,"sku":"AF-20-2214-BB","price":308.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/aries-af-20-2214-bb-20-x-45-4-lb-kdf-85-gac-filter-145324.jpg?v=1791915336"},{"product_id":"aries-af-20-1042-bb-20x4-5-big-blue-catalytic-carbon-filter","title":"Aries (AF-20-1042-BB) 20\" x 4.5\" Big Blue Catalytic Carbon Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eAries Filter Works\u003c\/div\u003e\n\u003ch2\u003eAF-20-1042-BB 20\" x 4.5\" Big Blue Catalytic Carbon Filter\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eHigh-capacity catalytic carbon cartridge engineered for chloramine and hydrogen sulfide reduction in whole-house applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eChloramine Removal\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eH2S Reduction\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" x 4.5\" Big Blue\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eWhole House\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Aries AF-20-1042-BB uses catalytic-grade activated carbon to address contaminants that standard carbon cannot handle effectively. This 20-inch cartridge targets chloramine, hydrogen sulfide, and residual chlorine while maintaining consistent flow rates in residential and light commercial whole-house systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFilter Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eAF-20-1042-BB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMedia Type\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eCatalytic Activated Carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003ePrimary Applications\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eChloramine removal, hydrogen sulfide reduction, odor control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eService Life\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003e6-12 months (varies with water quality and usage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFlow Rate\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003e10-15 GPM (depends on system pressure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHousing Requirements\u003c\/h3\u003e\n\u003cp\u003eThe AF-20-1042-BB is designed for standard 20-inch Big Blue filter housings with 4.5-inch inner diameters. Compatible with most whole-house systems using this cartridge size, including Pentek, Culligan, Hydronix, and other manufacturers offering 20\" x 4.5\" Big Blue configurations. Verify housing dimensions before ordering to ensure proper fit and seal.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Aries Filter Works","offers":[{"title":"Default Title","offer_id":35472541778082,"sku":"AF-20-1042-BB","price":238.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537132511394-padded.jpg?v=1777256825"},{"product_id":"aries-af-20-2125-bb-20x4-5-big-blue-1-lb-kdf55-gac","title":"Aries FilterWorks AF-20-2125-BB 20\" x 4.5\" KDF-55 \u0026 Coconut Shell GAC Water Filter Cartridge - (2.5 lb) Reduces Chlorine, Heavy Metals, Scale \u0026 Microorganisms - Made in USA","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n  \u003cdiv class=\"ro-callout\"\u003e\n    The Aries FilterWorks AF-20-2125-BB combines 2.5 pounds of KDF-55 redox media with acid-washed coconut shell GAC in a 20\" x 4.5\" double-open-end cartridge engineered for whole house and point-of-use chlorine, heavy metal, and scale reduction. This full-flow design from ResinTech's Aries division delivers 50% more capacity than standard 2.5\" diameter filters while maintaining compatibility with Pentek, GE, Culligan, and most 20-inch Big Blue housings.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eAries AF-20-2125-BB Filter Cartridge Details\u003c\/h2\u003e\n    \u003ctable class=\"specs-table\"\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimensions\u003c\/td\u003e\n        \u003ctd\u003e20\" length × 4.5\" diameter\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFilter Media\u003c\/td\u003e\n        \u003ctd\u003e2.5 lbs KDF-55 + coconut shell granular activated carbon\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMicron Rating\u003c\/td\u003e\n        \u003ctd\u003e10 micron\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFlow Rate\u003c\/td\u003e\n        \u003ctd\u003eUp to 3 GPM (system-dependent)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eService Life\u003c\/td\u003e\n        \u003ctd\u003e6–12 months or 30,000–60,000 gallons\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOperating Range\u003c\/td\u003e\n        \u003ctd\u003e40–100°F, 0–100 PSI\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEnd Cap Style\u003c\/td\u003e\n        \u003ctd\u003eDouble-open-end (DOE) for tool-free installation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eManufacturing\u003c\/td\u003e\n        \u003ctd\u003eMade in USA with FDA-approved materials\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eCartridge Replacement Procedure\u003c\/h2\u003e\n    \u003col class=\"install-steps\"\u003e\n      \u003cli\u003eShut off water supply and relieve pressure from the filter housing by opening a downstream faucet or pressing the housing's pressure relief button\u003c\/li\u003e\n      \u003cli\u003eUnscrew the housing sump, remove the old cartridge, and clean the sump with warm water and mild detergent to remove sediment and biofilm\u003c\/li\u003e\n      \u003cli\u003eInsert the new AF-20-2125-BB cartridge into the housing, ensuring the double-open-end design seats properly against both the cap and base\u003c\/li\u003e\n      \u003cli\u003eLubricate the housing o-ring with food-grade silicone grease, reassemble the housing, and slowly turn on water supply while checking for leaks\u003c\/li\u003e\n      \u003cli\u003eFlush the cartridge for 5–10 minutes (10 times the bed volume) to remove carbon fines and activate the KDF-55 media before use\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eHousing and Application Fit\u003c\/h2\u003e\n    \u003cp\u003eThe Aries AF-20-2125-BB fits all standard 20-inch Full Flow (Big Blue) filter housings with 4.5\" diameter capacity, including models from Pentek, GE, Culligan, Watts, Hydronix, and US Water Systems. The double-open-end construction works in both vertical and horizontal housing orientations. Ideal for whole house pre-filtration on municipal or well water, point-of-use drinking water systems, and upstream protection for reverse osmosis membranes or water softeners. The copper-zinc KDF-55 formulation provides bacteriostatic control in applications where microbial growth is a concern, while the coconut shell GAC addresses chloramines, chlorine, taste, odor, and organic compounds. Replace when pressure drop exceeds 15 PSI or at least annually, whichever comes first.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pro-tip\"\u003e\n    🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e KDF-55 media works best with moderate contact time and temperatures between 60–80°F. If you're treating well water with high iron or hydrogen sulfide, install this cartridge after a sediment pre-filter rated at 20 microns or larger to prevent premature clogging and extend the 10-micron final filtration stage.\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Aries Filter Works","offers":[{"title":"Default Title","offer_id":35472543350946,"sku":"AF-20-2125-BB","price":107.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537132773538-padded.jpg?v=1791927061"},{"product_id":"aries-af-20-3003-bb-20-x-4-5-big-blue-water-softening-filter","title":"Aries - AF-20-3003-BB - 20\" x 4.5\" Big Blue Water Softening Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eAries FilterWorks\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eAF-20-3003-BB\u003c\/em\u003e 20\" x 4.5\" Big Blue Softening Cartridge\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eResinTech CGS high-capacity cation exchange resin in an oversized cartridge for residential and commercial water softening\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ NSF\/ANSI 44 \u0026amp; 61 Certified Media\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Made in USA\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 50% Higher Capacity\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Removes Calcium, Magnesium \u0026amp; Iron\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Aries AF-20-3003-BB uses \u003cstrong\u003eResinTech CGS gel-type sulfonate polystyrene cation resin\u003c\/strong\u003e to eliminate hard water problems in standard 20-inch Big Blue housings. Oversized cartridge design delivers \u003cstrong\u003eup to 50% more media capacity\u003c\/strong\u003e than standard cartridges, extending service life to approximately \u003cstrong\u003e84,000 mg\/L\u003c\/strong\u003e before regeneration or replacement is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eEngineered for Hard Water Conditions\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🧪\u003c\/span\u003e\n\u003ch3\u003eResinTech CGS Media\u003c\/h3\u003e\n\u003cp\u003eHigh-purity gel-type sulfonate polystyrene cation resin supplied in sodium form as uniform spherical beads. Exchanges calcium and magnesium ions for sodium, eliminating scale and hardness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔒\u003c\/span\u003e\n\u003ch3\u003eNSF Certified\u003c\/h3\u003e\n\u003cp\u003eMedia meets NSF\/ANSI Standard 44 for cation exchange water softeners and Standard 61 for drinking water system components. Full traceability and quality control on every cartridge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e📐\u003c\/span\u003e\n\u003ch3\u003eOversized Design\u003c\/h3\u003e\n\u003cp\u003eLarger cartridge body allows maximum media fill, increasing total capacity by up to 50% compared to standard 20\" x 4.5\" softening filters. Longer service intervals, fewer changeouts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔄\u003c\/span\u003e\n\u003ch3\u003eDouble Open-Ended\u003c\/h3\u003e\n\u003cp\u003eStandard dual-open construction fits all residential and industrial 20-inch Big Blue housings. Drop-in replacement for existing AF series and compatible softening cartridges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🛡️\u003c\/span\u003e\n\u003ch3\u003eIron Reduction\u003c\/h3\u003e\n\u003cp\u003eCation resin's ability to exchange positively charged ions also removes dissolved ferrous iron, preventing rust staining on fixtures, laundry, and surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🇺🇸\u003c\/span\u003e\n\u003ch3\u003eUSA Manufacturing\u003c\/h3\u003e\n\u003cp\u003eProduced by Aries FilterWorks, a division of ResinTech. Complete control over media production and cartridge assembly ensures consistent performance and quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFits Standard Big Blue Housings\u003c\/h3\u003e\n\u003cp\u003eThe AF-20-3003-BB is designed for all standard 20-inch Big Blue filter housings with 4.5-inch inner diameter. Ideal for residential applications including whole-house systems to eliminate spotting on dishes, soap film on showers, stiff laundry, and scale buildup in plumbing. Also suited for commercial and industrial use: laundry facilities, boiler makeup water, heat exchanger protection, spray nozzle systems, and pre-treatment ahead of reverse osmosis membranes. Not for use in water with free chlorine present.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eAries FilterWorks maintains strict quality control over every aspect of production, ensuring complete traceability from resin bead to finished cartridge.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Aries Filter Works","offers":[{"title":"Default Title","offer_id":35472545120418,"sku":"AF-20-3003-BB","price":99.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/aries-af-20-3003-bb-20-x-45-big-blue-water-softening-filter-755870.jpg?v=1791927062"},{"product_id":"pentek-crf20-bb-20-x-4-5-radial-flow-carbon-block","title":"Pentek - CRF20-BB - 20\" x 4.5\" Radial Flow Carbon Block","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek High-Capacity Radial Flow Technology\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eCRF20-BB\u003c\/em\u003e 20\" x 4.5\" Radial Flow Carbon Block Filter\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eEngineered for high-flow commercial and whole-house applications where chlorine, chloramine, and sediment reduction can't compromise flow rate\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 200,000 gallon capacity\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 25 micron filtration\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Radial flow design for low pressure drop\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Advanced granular activated carbon\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Pentek CRF20-BB uses a radial flow configuration that allows water to flow from the outside in, maximizing surface area and minimizing pressure loss. At \u003cstrong\u003e5 GPM\u003c\/strong\u003e, this filter maintains just \u003cstrong\u003e2.5 PSI pressure drop\u003c\/strong\u003e while reducing chlorine, chloramine, and sediment down to \u003cstrong\u003e25 microns\u003c\/strong\u003e. Ideal for demanding applications where both filtration performance and flow rate matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhy Radial Flow Outperforms Standard Carbon Blocks\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔄\u003c\/span\u003e\n\u003ch3\u003eRadial Flow Design\u003c\/h3\u003e\n\u003cp\u003eWater enters through the outer surface and flows radially inward, using the entire filter media surface area for superior contact time and reduced pressure drop\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003eHigh Flow, Low Pressure Loss\u003c\/h3\u003e\n\u003cp\u003eOnly 2.5 PSI drop at 5 GPM flow rate thanks to the radial configuration, making it ideal for whole-house and commercial installations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🎯\u003c\/span\u003e\n\u003ch3\u003eAdvanced GAC Media\u003c\/h3\u003e\n\u003cp\u003eGranular activated carbon block reduces chlorine, chloramine, taste, odor, and sediment down to 25 microns without sacrificing capacity\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e⏱️\u003c\/span\u003e\n\u003ch3\u003e200,000 Gallon Capacity\u003c\/h3\u003e\n\u003cp\u003eExtended service life at 4 GPM flow rate reduces maintenance frequency and lowers total cost of ownership for high-demand applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🏗️\u003c\/span\u003e\n\u003ch3\u003eBig Blue Housing Fit\u003c\/h3\u003e\n\u003cp\u003eStandard 20\" x 4.5\" dimensions fit Pentek Big Blue and most standard 20-inch filter housings with 4.5-inch diameter capacity\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🏭\u003c\/span\u003e\n\u003ch3\u003eCommercial Grade Construction\u003c\/h3\u003e\n\u003cp\u003eBuilt for continuous operation in well water treatment, commercial facilities, and whole-house systems where reliability is non-negotiable\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhere the CRF20-BB Belongs\u003c\/h3\u003e\n\u003cp\u003eThe Pentek CRF20-BB (model 155967-43) is designed for 20-inch Big Blue housings and similar large-capacity filter vessels. It excels in whole-house filtration systems, commercial water treatment, well water applications with chlorination, and any installation where chlorine or chloramine reduction is needed at sustained flow rates above 4 GPM. Compatible with standard 20\" x 4.5\" housing sizes from Pentek, Culligan, GE, Watts, and other major manufacturers.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003ePentek has been engineering filtration media for residential, commercial, and industrial water treatment for over four decades. The CRF20-BB represents their commitment to solving high-flow carbon filtration challenges without compromise.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35472686743714,"sku":"155967-43","price":371.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-crf20-bb-20-x-45-radial-flow-carbon-block-196312.jpg?v=1791927062"},{"product_id":"watts-rc-c-bb-20-50-20x4-5-clear-empty-refillable-cartridge","title":"Empty Refillable Cartridge 20\" x 4.5\" Clear","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n  \u003cdiv class=\"ro-callout\"\u003e\n    The Watts RC-C-BB-20-50 gives you complete control over your 20-inch Big Blue filtration setup by letting you fill the cartridge with whatever media your water needs. This clear, refillable housing holds up to 155 cubic inches of custom media and works in any standard 4.5\" x 20\" filter housing.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eWatts RC-C-BB-20-50 Empty Refillable Cartridge\u003c\/h2\u003e\n    \u003ctable class=\"specs-table\"\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eManufacturer\u003c\/td\u003e\n        \u003ctd\u003eWatts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eModel Number\u003c\/td\u003e\n        \u003ctd\u003eRC-C-BB-20-50\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimensions\u003c\/td\u003e\n        \u003ctd\u003e20\" x 4.5\"\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHousing Type\u003c\/td\u003e\n        \u003ctd\u003eStandard Big Blue (BB) 20-inch\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMedia Capacity\u003c\/td\u003e\n        \u003ctd\u003e155 cubic inches\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConstruction\u003c\/td\u003e\n        \u003ctd\u003eClear polypropylene\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eIncluded Foam Pad\u003c\/td\u003e\n        \u003ctd\u003e50 micron rated\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eReusability\u003c\/td\u003e\n        \u003ctd\u003eFully refillable and reusable\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eHow to Load Your Custom Media\u003c\/h2\u003e\n    \u003col class=\"install-steps\"\u003e\n      \u003cli\u003eUnscrew the top cap of the empty cartridge and set the included 50-micron foam pad aside\u003c\/li\u003e\n      \u003cli\u003eFill the cartridge body with your chosen media—calcite, catalytic carbon, KDF, phosphate, or any custom blend your water requires\u003c\/li\u003e\n      \u003cli\u003ePlace the foam pad on top of the media to prevent channeling and keep the media bed stable during operation\u003c\/li\u003e\n      \u003cli\u003eThread the top cap back on securely, then install the loaded cartridge into your 20-inch Big Blue housing\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n    \u003ch2 class=\"ro-title\"\u003eHousing Fit\u003c\/h2\u003e\n    \u003cp\u003eThis Watts refillable cartridge fits all standard 20\" x 4.5\" Big Blue filter housings, including models from Pentek, Hydronix, Watts, Culligan, and other brands using the industry-standard 20-inch sump design. The clear construction lets you monitor media condition and water flow at a glance.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pro-tip\"\u003e\n    🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e Leave about half an inch of headspace at the top when filling with media. This prevents over-compression and allows the foam pad to sit properly, which improves flow rate and prevents media from escaping into your water line.\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":35472995942562,"sku":"RC-C-BB-20","price":51.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/empty-refillable-cartridge-20-x-45-clear-607353.jpg?v=1791927102"},{"product_id":"pentek-floplus-20bb-20-x-4-5-big-blue-cto-cyst-0-5-micron-filter","title":"Pentek FloPlus-20BB - 20\" x 4.5\" Big Blue Carbon Block - Cyst 0.5 Micron Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Pentek FloPlus-20BB is a 20\" x 4.5\" carbon block filter cartridge engineered to reduce sediment, chlorine taste and odor, and protozoan cysts down to 0.5 micron with 99.95% cyst reduction efficiency. With a 50,000-gallon chlorine reduction capacity at 4 gpm and NSF\/ANSI 53 certification, this Big Blue cartridge delivers whole-house filtration performance with the dirt-holding capacity of a 10-micron filter.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCore Performance Data\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFiltration Rating\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.5 Micron\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eNominal (85% efficiency)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCyst Reduction\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e99.95%\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eNSF\/ANSI 53 certified\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eChlorine Capacity\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e50,000 Gal\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAt 4 gpm, 90% reduction\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFlow Rate\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e4 GPM\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e4 psi initial pressure drop\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" x 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFits Big Blue housings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTemperature Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e40–180°F\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e4.4–82.2°C operating range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eConstruction \u0026amp; Materials\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Media\u003c\/td\u003e\n\u003ctd\u003eModified bonded powdered activated carbon (PAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGasket Material\u003c\/td\u003e\n\u003ctd\u003eSantoprene (TPE, thermoplastic elastomer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExact Dimensions\u003c\/td\u003e\n\u003ctd\u003e20\" x 4-5\/8\" (508 x 118 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCysts Reduced\u003c\/td\u003e\n\u003ctd\u003eGiardia, Entamoeba, Cryptosporidium, Toxoplasma\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorine Spec\u003c\/td\u003e\n\u003ctd\u003eReduces FAC at 2 ppm by 90% minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eNSF\/ANSI Standard 53 for cyst reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePentair (ISO 9001 \u0026amp; 14001 certified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eDesigned for Whole-House \u0026amp; Commercial Use\u003c\/h2\u003e\n\u003cp\u003eThe FloPlus-20BB is designed for standard 20-inch Big Blue filter housings (sold separately) and is ideal for whole-house water filtration, commercial drinking water applications, and point-of-entry systems requiring high-capacity chlorine and cyst reduction. The modified bonded carbon block construction provides the flow rate and dirt-holding capacity comparable to a 10-micron sediment filter while maintaining sub-micron filtration efficiency. This cartridge is particularly effective in municipal water systems where chlorine taste and odor removal is needed alongside protection against protozoan cysts. Santoprene gaskets ensure a reliable seal in both residential and light commercial installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e The FloPlus series uses a unique modified carbon formulation that resists channeling and maintains flow rate longer than standard carbon blocks. Replace every 12 months or when flow rate drops noticeably, whichever comes first, even if you haven't reached the 50,000-gallon capacity.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35473345052834,"sku":"455906-43","price":196.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-floplus-20bb-20-x-45-big-blue-carbon-block-cyst-05-micron-filter-563157.jpg?v=1762461007"},{"product_id":"watts-wpc-series-20-x-4-5-pleated-sediment-filter","title":"Watts - WPC Series - 20\" x 4.5\" Pleated Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eWatts WPC Series\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" \u003cem\u003ePleated Sediment Filter\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eSynthetic pleated cartridge with washable media, superior dirt capacity, and lower pressure drop than wound or spun alternatives\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e100% Synthetic\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eWashable \u0026amp; Reusable\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eCellulose-Free\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePleated Design Outperforms Depth Filters\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📐\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eIncreased Surface Area\u003c\/h3\u003e\n\u003cp\u003ePleated construction delivers significantly more filtration surface than wound or spun cartridges, resulting in greater dirt holding capacity and extended service intervals\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eLower Pressure Drop\u003c\/h3\u003e\n\u003cp\u003eSynthetic polypropylene pleats maintain higher flow rates with less resistance compared to depth-style elements, reducing pump strain and energy costs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔄\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eWashable Media\u003c\/h3\u003e\n\u003cp\u003e5 micron and coarser ratings can be cleaned and reused multiple times, reducing replacement costs without compromising filtration performance\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🛡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eNo Additives or Binders\u003c\/h3\u003e\n\u003cp\u003ePure synthetic construction eliminates the foaming and filter degradation common with bonded or resin-based media that breaks down over time\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Micron Ratings\u003c\/td\u003e\n\u003ctd\u003e0.35, 1, 5, 20, 50 micron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Media\u003c\/td\u003e\n\u003ctd\u003eCellulose-free synthetic pleated polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter Tube\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Caps\u003c\/td\u003e\n\u003ctd\u003eMolded polyurethane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Temperature\u003c\/td\u003e\n\u003ctd\u003e140°F (60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Temperature\u003c\/td\u003e\n\u003ctd\u003e40°F (4.4°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Pressure\u003c\/td\u003e\n\u003ctd\u003e40 psid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Change-Out\u003c\/td\u003e\n\u003ctd\u003e25 psid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHousing \u0026amp; Replacement Information\u003c\/h3\u003e\n\u003cp\u003eFits all standard 20\" x 4.5\" Big Blue filter housings. Direct replacement for Watts FlowMax series: FM-BB-20-0.35, FM-BB-20-1, FM-BB-20-5, FM-BB-20-10, FM-BB-20-20, FM-BB-20-50. WPC series model numbers: WPC1FF20, WPC5FF20, WPC20FF20, WPC50FF20. Suitable for whole-house, well water, and commercial sediment filtration applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eService Schedule\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 3-6 Months\u003c\/div\u003e\n\u003ch4\u003eInspect \u0026amp; Clean\u003c\/h4\u003e\n\u003cp\u003eFor 5 micron and coarser ratings, remove cartridge and rinse pleats thoroughly under running water to extend service life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAt 25 psid\u003c\/div\u003e\n\u003ch4\u003eReplace Cartridge\u003c\/h4\u003e\n\u003cp\u003eMonitor pressure differential across the filter. Replace when pressure drop reaches 25 psid or flow rate declines noticeably\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAs Needed\u003c\/div\u003e\n\u003ch4\u003eVisual Check\u003c\/h4\u003e\n\u003cp\u003eExamine pleats for damage, discoloration, or excessive sediment buildup that cannot be cleaned away\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eLower Operating Costs\u003c\/h4\u003e\n\u003cp\u003eWashable media and extended service life reduce annual filter replacement expenses\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⚡\u003c\/div\u003e\n\u003ch4\u003eBetter Flow Rates\u003c\/h4\u003e\n\u003cp\u003eLower initial pressure drop maintains system performance without oversized pumps\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔬\u003c\/div\u003e\n\u003ch4\u003eSuperior Dirt Capacity\u003c\/h4\u003e\n\u003cp\u003ePleated surface area captures more sediment before requiring service or replacement\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eIndividually Wrapped\u003c\/h4\u003e\n\u003cp\u003eEach cartridge sealed for purity and protected from contamination until installation\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Watts","offers":[{"title":"0.35 Micron","offer_id":35473648484514,"sku":"WPC0.35FF20","price":85.0,"currency_code":"USD","in_stock":true},{"title":"1 Micron","offer_id":35473648353442,"sku":"WPC1FF20","price":79.57,"currency_code":"USD","in_stock":true},{"title":"5 Micron","offer_id":35473648386210,"sku":"WPC5FF20","price":65.56,"currency_code":"USD","in_stock":true},{"title":"20 Micron","offer_id":35473648418978,"sku":"WPC20FF20","price":59.39,"currency_code":"USD","in_stock":true},{"title":"50 Micron","offer_id":35473648451746,"sku":"WPC50FF20","price":54.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537291075746-padded.jpg?v=1777271245"},{"product_id":"watts-fphrc-bb-20-20-x-4-5-big-blue-oil-reduction-filter-cartridge","title":"Watts (FPHRC-BB-20) 20\" x 4.5\" Big Blue Oil Reduction Filter Cartridge","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n  \u003cdiv class=\"ro-hero\"\u003e\n    \u003cdiv class=\"ro-eyebrow\"\u003eWatts FPHRC-BB-20\u003c\/div\u003e\n    \u003ch2\u003e20\" x 4.5\" Big Blue Oil Reduction Filter Cartridge\u003c\/h2\u003e\n    \u003cp class=\"ro-tagline\"\u003eSpecialty hydrocarbon removal filter that permanently bonds oil, gasoline, diesel, and solvents from contaminated water sources without pressure drop\u003c\/p\u003e\n    \u003cdiv class=\"ro-badges\"\u003e\n      \u003cspan class=\"ro-badge\"\u003e5 Micron\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003e20 GPM Flow Rate\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003eWhole House\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003eOil Absorbent Media\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-callout\"\u003e\n    \u003cp\u003eThe Watts FPHRC-BB-20 is designed for water sources contaminated with petroleum products, industrial runoff, or mechanical oil residue. The absorbent media inside this 20\" x 4.5\" Big Blue cartridge permanently bonds to hydrocarbons in a single pass while maintaining high flow rates even when fully saturated.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n    \u003ch3 class=\"ro-title\"\u003eFilter Performance Data\u003c\/h3\u003e\n    \u003cdiv class=\"specs-table\"\u003e\n      \u003cdiv class=\"spec-row\"\u003e\n        \u003cspan class=\"spec-label\"\u003eDimensions\u003c\/span\u003e\n        \u003cspan class=\"spec-value\"\u003e20\" x 4.5\"\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"spec-row\"\u003e\n        \u003cspan class=\"spec-label\"\u003eMicron Rating\u003c\/span\u003e\n        \u003cspan class=\"spec-value\"\u003e5 Micron\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"spec-row\"\u003e\n        \u003cspan class=\"spec-label\"\u003eMax Flow Rate\u003c\/span\u003e\n        \u003cspan class=\"spec-value\"\u003e20 GPM\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"spec-row\"\u003e\n        \u003cspan class=\"spec-label\"\u003eMedia Type\u003c\/span\u003e\n        \u003cspan class=\"spec-value\"\u003eOil absorbent bonding media\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"spec-row\"\u003e\n        \u003cspan class=\"spec-label\"\u003eRemoves\u003c\/span\u003e\n        \u003cspan class=\"spec-value\"\u003eOil, gasoline, diesel, solvents, sheen, hydrocarbons\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"spec-row\"\u003e\n        \u003cspan class=\"spec-label\"\u003ePressure Drop\u003c\/span\u003e\n        \u003cspan class=\"spec-value\"\u003eLow, even when saturated\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"spec-row\"\u003e\n        \u003cspan class=\"spec-label\"\u003eApplication\u003c\/span\u003e\n        \u003cspan class=\"spec-value\"\u003eWhole house, point-of-entry\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n    \u003ch3 class=\"ro-title\"\u003eHousing Requirements\u003c\/h3\u003e\n    \u003cp\u003eThe Watts FPHRC-BB-20 fits all standard 20-inch Big Blue filter housings with 4.5-inch diameter capacity. Designed for residential and light commercial whole house applications where petroleum contamination is present in well water, surface water, or municipal supplies affected by industrial activity. Replace cartridge when flow rate decreases or when hydrocarbon contamination returns to treated water.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":35473696850082,"sku":"FPHRC-BB-20","price":602.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537305100450-padded.jpg?v=1777270890"},{"product_id":"pentek-255678-43-20x4-5-cfb-plus20bb-water-filter-cartridge","title":"Pentek - CFB-PLUS20BB - 20\" x 4.5\" Fibredyne Modified Carbon Block Filter - 5 Micron","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003ePentek Fibredyne Technology\u003c\/div\u003e\n\u003ch2\u003eCFB-PLUS20BB 20\" x 4.5\" Modified Carbon Block Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003e5 micron dual-action filtration that combines sediment reduction with enhanced chlorine removal in a single cartridge\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eNSF\/ANSI 42 Certified Materials\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e5 Micron Rating\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eFibredyne Technology\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eFDA-Compliant Materials\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Pentek CFB-PLUS20BB represents an evolution in carbon block design, using proprietary Fibredyne technology to bond powdered activated carbon directly onto a synthetic fiber matrix. This 20\" x 4.5\" cartridge delivers twice the chlorine taste and odor reduction and dirt-holding capacity of conventional carbon blocks, while eliminating carbon fines in your water.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFibredyne Dual-Action Filtration\u003c\/h3\u003e\n\n\u003cdiv class=\"stage-pipeline\"\u003e\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eSEDIMENT\u003c\/span\u003e\n\u003ch3\u003eSynthetic Fiber Matrix\u003c\/h3\u003e\n\u003cp\u003eWater flows through the cellulose-free synthetic fiber structure, capturing sediment, dirt, and particulate down to 5 microns with exceptional dirt-holding capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eCARBON\u003c\/span\u003e\n\u003ch3\u003eBonded Activated Carbon\u003c\/h3\u003e\n\u003cp\u003ePowdered activated carbon bonded to the fiber matrix reduces chlorine taste and odor, along with organic contaminants, at twice the capacity of traditional carbon blocks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003ePOLISH\u003c\/span\u003e\n\u003ch3\u003ePost-Filtration Layer\u003c\/h3\u003e\n\u003cp\u003eA fused post-filtration layer prevents carbon fines from entering the effluent stream, ensuring clean, clear water without black residue common in standard carbon blocks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eCFB-PLUS20BB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMicron Rating\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003e5 micron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFilter Type\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eModified Carbon Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eTechnology\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eFibredyne\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eCertification\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eNSF\/ANSI 42 (materials)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMaterials\u003c\/td\u003e\n\u003ctd class=\"spec-val\"\u003eFDA-compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eApplication Range\u003c\/h3\u003e\n\u003cp\u003eThe CFB-PLUS20BB fits standard 20\" big blue housings with 4.5\" diameter capacity. Ideal for whole-house filtration systems, well water applications, commercial food service, and light industrial use where both sediment and chlorine removal are required. Replace every 6-12 months depending on water quality and usage volume.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Pentek","offers":[{"title":"Default Title","offer_id":35473940709538,"sku":"255678-43","price":163.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/pentek-cfb-plus20bb-20-x-45-fibredyne-modified-carbon-block-filter-5-micron-963666.jpg?v=1759501181"},{"product_id":"watts-sf5-20-425-20-x-4-5-string-wound-standard-filter-cartridges","title":"Watts SF-20-425 20\" x 4.5\" String Wound Standard Filter Cartridges","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Watts SF-20-425 delivers true depth filtration through precision string-wound polypropylene construction, engineered for demanding commercial, whole-house, and well water applications. This 20\" x 4.5\" cartridge handles everything from mineral acids to caustic alkalis with exceptional dirt-holding capacity and minimal media migration.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWatts SF-20-425 Technical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicron Rating\u003c\/td\u003e\n\u003ctd\u003e5 Micron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Media\u003c\/td\u003e\n\u003ctd\u003ePolypropylene String Wound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Temperature\u003c\/td\u003e\n\u003ctd\u003e120°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3 lb. 8 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eOne-piece continuous wind\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Change\u003c\/td\u003e\n\u003ctd\u003eEvery 6 months (varies by water quality)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWatts (FilterCor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eInstalling Your String Wound Cartridge\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eShut off water supply and relieve pressure from your filter housing before opening\u003c\/li\u003e\n\u003cli\u003eRemove old cartridge and clean the housing interior with a mild sanitizing solution\u003c\/li\u003e\n\u003cli\u003eCheck o-rings and sump seals for wear, replace if necessary before installing new cartridge\u003c\/li\u003e\n\u003cli\u003eInsert the Watts SF-20-425 cartridge into housing, ensuring proper seating in both top and bottom\u003c\/li\u003e\n\u003cli\u003eReassemble housing, turn on water slowly, and check for leaks before returning to full pressure\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eApplications \u0026amp; Chemical Resistance\u003c\/h2\u003e\n\u003cp\u003eThe Watts SF-20-425 fits standard 20\" x 4.5\" filter housings and is compatible with mineral acids, organic solvents, caustic soda, ferric hydroxide, plating solutions, ethyl alcohol, petroleum and vegetable oils, oxidizing agents, alkalis, organic acids, potable water, demineralized water, photographic solutions, and pre-membrane filtration systems. The polypropylene construction provides excellent micro-organism resistance and can be easily incinerated with minimal ash residue. Ideal for commercial facilities, whole-house sediment reduction, well water treatment, and industrial process filtration where chemical compatibility is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e String wound cartridges excel in high-sediment applications but clog faster than pleated filters in the same micron rating. Monitor pressure drop across the filter and replace when it exceeds 15 PSI or flow noticeably decreases, even if you haven't hit the 6-month mark.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"FilterCor","offers":[{"title":"5 Micron","offer_id":42660915314859,"sku":"SF5-20-425","price":51.04,"currency_code":"USD","in_stock":true},{"title":"20 Micron","offer_id":42660917182635,"sku":"SF20-20-425","price":95.7,"currency_code":"USD","in_stock":true},{"title":"50 Micron","offer_id":42660915347627,"sku":"SF5-20-426","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/watts-sf-20-425-20-x-45-string-wound-standard-filter-cartridges-182970.jpg?v=1791927403"},{"product_id":"kx-technologies-32-450-20-matrikx-20-x-4-5-matrikx-cto-5-micron-chlorine-chloramine-taste-and-odor-filter","title":"KX Technologies - 32-450-20-MATRIKX - 20\" x 4.5\" MatriKX CTO - 5 Micron - Chlorine\/Chloramine Taste and Odor Filter","description":"\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eKX Technologies\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" \u003cem\u003eMatriKX CTO\u003c\/em\u003e Carbon Block Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003e5 micron dual-action filtration for chlorine and chloramine removal in whole-house and commercial systems\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eNSF Certified\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eCoconut Shell Carbon\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" Big Blue\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eDual-action carbon block technology tackles both sediment and chemical contaminants\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eDual Contaminant Reduction\u003c\/h3\u003e\n\u003cp\u003eRemoves both chlorine and chloramine taste and odor in a single filter stage, unlike standard carbon that only addresses chlorine\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🥥\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Carbon Media\u003c\/h3\u003e\n\u003cp\u003e100% coconut shell activated carbon provides superior adsorption capacity and extended filter life compared to coal-based alternatives\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚙️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e5 Micron Filtration\u003c\/h3\u003e\n\u003cp\u003eCaptures sediment, rust, and sand particles down to 5 microns while maintaining low pressure drop for consistent flow rates\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🏭\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eISO 9001 Manufacturing\u003c\/h3\u003e\n\u003cp\u003eProduced in WQA and ISO certified facilities with independent lab testing to ensure consistent performance across every cartridge\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eDirect replacement for discontinued models\u003c\/h3\u003e\n\u003cp\u003eModel 32-450-20-MATRIKX replaces KX MatriKX 32-450-20-GREEN and 32-425-125-20. Fits all standard 20\" Big Blue housings with 4.5\" diameter cartridge capacity. Compatible with residential whole-house systems, commercial applications, and well water treatment installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eReplacement schedule by application\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e6 months\u003c\/div\u003e\n\u003ch4\u003eWhole-House Municipal\u003c\/h4\u003e\n\u003cp\u003eReplace every 6 months in residential whole-house systems with chlorinated city water at typical flow rates\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e4-6 months\u003c\/div\u003e\n\u003ch4\u003eWell Water Systems\u003c\/h4\u003e\n\u003cp\u003eReplace every 4-6 months when treating well water with high sediment load or heavy chloramine dosing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e3-4 months\u003c\/div\u003e\n\u003ch4\u003eCommercial Applications\u003c\/h4\u003e\n\u003cp\u003eReplace every 3-4 months in high-volume commercial installations or food service operations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAs needed\u003c\/div\u003e\n\u003ch4\u003ePressure Drop Indicator\u003c\/h4\u003e\n\u003cp\u003eMonitor system pressure and replace when flow rate decreases noticeably or pressure drops below operating range\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e📐\u003c\/div\u003e\n\u003ch4\u003eStandard 20BB Size\u003c\/h4\u003e\n\u003cp\u003e20\" x 4.5\" dimensions fit industry-standard Big Blue housings without modification\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔬\u003c\/div\u003e\n\u003ch4\u003eLab Validated\u003c\/h4\u003e\n\u003cp\u003eIndependent laboratory testing verifies chlorine and chloramine reduction performance\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e♻️\u003c\/div\u003e\n\u003ch4\u003eSustainability Certified\u003c\/h4\u003e\n\u003cp\u003eWQA S-803 certified sustainable manufacturing and California Prop 65 compliant materials\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eHigh Dirt Capacity\u003c\/h4\u003e\n\u003cp\u003eExceptional contaminant holding capacity maintains performance throughout filter lifespan\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"KX Technologies","offers":[{"title":"Single (1)","offer_id":43586303328427,"sku":"32-450-20-MATRIKX","price":86.6,"currency_code":"USD","in_stock":true},{"title":"Case (4)","offer_id":43586303361195,"sku":"(4x) x 32-450-20-MATRIKX (Case)","price":336.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/kx-technologies-32-450-20-matrikx-20-x-45-matrikx-cto-5-micron-chlorinechloramine-taste-and-odor-filter-956783.jpg?v=1762461362"},{"product_id":"kx-technologies-01-450-20-matrikx-20-x-4-5-matrikx-cto-plus-1-micron-chlorine-chloramine-voc-reduction-filter","title":"KX Technologies - 01-450-20-MATRIKX - 20\" x 4.5\" MatriKX CTO Plus- 1 Micron - Chlorine\/Chloramine \u0026 VOC Reduction Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eKX Technologies MatriKX CTO Plus\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Carbon Block Filter with Chloramine \u0026amp; VOC Reduction\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eModel 01-450-20-MATRIKX — 1 micron nominal filtration with GreenBlock technology for comprehensive chemical contaminant control\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e1 Micron Nominal\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eChlorine \u0026amp; Chloramine\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eVOC Reduction\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eNSF Certified Materials\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe KX MatriKX CTO Plus 01-450-20-MATRIKX combines extended carbon block filtration with high adsorptive capacity for chlorine, chloramine, taste, odor, and volatile organic compounds. Built with GreenBlock technology and a prefiltration medium, this 20 inch x 4.5 inch carbon block delivers both fine sediment control and comprehensive chemical reduction in residential, commercial, and pre-RO applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Performance \u0026amp; Dimensions\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e01-450-20-MATRIKX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFiltration Rating\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e1 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMedia Type\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eCarbon block with GreenBlock technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003ePrimary Reduction\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eChlorine, chloramine, VOCs, taste \u0026amp; odor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eSecondary Reduction\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eChloroform, chemical contaminants, sediment \u0026amp; silt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eFlow Characteristics\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eExceptionally low pressure drop, high dirt holding capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eCertifications\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eNSF \u0026amp; WQA material safety, California Prop 65 compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eReplaces\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e01-450-125-20, 02-450-125-20, 01-450-20-GREEN, FXB20CYST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHousing \u0026amp; System Fit\u003c\/h2\u003e\n\u003cp\u003eThe KX MatriKX 01-450-20-MATRIKX fits all standard 20 inch Big Blue filter housings with 4.5 inch diameter capacity. Compatible with Culligan, American Plumber, Aqua Pure, Pentek, Ametek, and US Filter housings. Suitable for whole-house filtration, well water treatment, commercial water purification, food service, industrial makeup water, product rinse applications, and pre-RO or post-RO systems requiring comprehensive chlorine and chloramine control. Direct replacement for discontinued KX MatriKX 01-450-125-20, 02-450-125-20, 01-450-20-GREEN, and FXB20CYST filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"KX Technologies","offers":[{"title":"Default Title","offer_id":35474719441058,"sku":"01-450-20-MATRIKX(R)","price":117.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/kx-technologies-01-450-20-matrikx-20-x-45-matrikx-cto-plus-1-micron-chlorinechloramine-voc-reduction-filter-291219.jpg?v=1762461373"},{"product_id":"whole-house-20-x-4-5-big-blue-water-filters-sediment-gac-carbon-pack-of-3","title":"IPW Industries Inc - Full Flow Water Filters - Sediment\/GAC\/Carbon Block(Pack of 3) | 4.5\" x 20\"","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThis complete 3-stage whole house filter replacement set delivers comprehensive filtration from sediment down to chemical contaminants in standard 4.5\" x 20\" Big Blue housings. Each IPW Industries pack includes a 5-micron sediment filter, GAC filter for chlorine removal, and carbon block filter for taste, odor, and organic chemical reduction.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Set Overview\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e4.5\" × 20\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eStandard Big Blue sizing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePack Contents\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e3 Filters\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eComplete stage replacement\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eStage 1 Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eSediment\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e5 micron poly spun\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eStage 2 Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eGAC Carbon\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eChlorine \u0026amp; chloramine\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eStage 3 Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eCarbon Block\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eChemical \u0026amp; VOC reduction\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eHousing Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eTriple Big Blue\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eStandard 20\" units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eIPW Industries Inc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Dimensions\u003c\/td\u003e\n\u003ctd\u003e4.5 inches diameter × 20 inches length (each cartridge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 1 Media\u003c\/td\u003e\n\u003ctd\u003ePoly spun sediment filter, 5 micron nominal rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 2 Media\u003c\/td\u003e\n\u003ctd\u003eGranular activated carbon (GAC) for chlorine and chloramine removal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 3 Media\u003c\/td\u003e\n\u003ctd\u003eSolid carbon block for organic chemicals, pesticides, herbicides, VOCs, taste and odor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard 20\" x 4.5\" Big Blue triple filter housings, interchangeable with industry-standard cartridges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Life\u003c\/td\u003e\n\u003ctd\u003e6–12 months depending on water quality and usage (sediment filter may require more frequent changes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eDesigned For Whole House Water Treatment\u003c\/h2\u003e\n\u003cp\u003eThis IPW Industries 3-filter set is designed as a direct replacement for any standard 3-stage whole house Big Blue filtration system using 20\" x 4.5\" cartridges. Compatible with housings from major manufacturers including Pentek, Hydronix, Culligan, and others using industry-standard sizing. Ideal for well water applications with moderate sediment loads, municipal water with chlorine or chloramine treatment, and homes requiring comprehensive protection against taste, odor, and chemical contaminants. The three-stage approach addresses particulate filtration first, followed by adsorptive removal of disinfectants and oxidizers, finishing with fine carbon block polishing for trace organics and volatile compounds.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 Replace the sediment pre-filter every 3–6 months and the carbon stages every 9–12 months for optimal performance. If you notice pressure drop or taste changes before the recommended interval, replace filters early—carbon filters lose effectiveness before they clog.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"IPW Industries Inc","offers":[{"title":"Default Title","offer_id":35474737889442,"sku":"20”BB : SED | CB | GAC","price":94.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537533427874-padded.jpg?v=1777265727"},{"product_id":"kx-technologies-06-450-20-matrikx-20-x-4-5-matrikx-pb1-0-5-micron-chlorine-chloramine-voc-cyst-lead-filter","title":"KX Technologies - 06-450-20-MATRIKX - 20\" x 4.5\" MatriKX Pb1 - 0.5 Micron - Chlorine\/Chloramine, VOC, CYST, Lead Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe KX Technologies MatriKX Pb1 (06-450-20-MATRIKX) is a 20\" x 4.5\" carbon block filter cartridge engineered to reduce lead, cysts, chlorine, chloramines, VOCs, and sediment down to 0.5 micron nominal. Powered by GreenBlock technology, this filter combines ion-exchange media for soluble lead removal with mechanical filtration for particulate lead, delivering NSF-certified performance for whole-house, commercial, and well water applications.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Performance \u0026amp; Dimensions\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFiltration Rating\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.5 Micron\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eNominal rating for cyst and sediment removal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" x 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eStandard Big Blue cartridge size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFilter Media\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eCarbon Block\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMatriKX with GreenBlock technology\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePrimary Contaminants\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eLead \u0026amp; Cysts\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePlus chlorine, chloramines, VOCs, sediment\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eLead Reduction\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eIon-Exchange\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eSoluble and particulate lead removal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eNSF \u0026amp; WQA\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMaterial safety and Prop 65 compliant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eMatriKX Pb1 Carbon Block Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Part Number\u003c\/td\u003e\n\u003ctd\u003e06-450-20-MATRIKX (replaces 06-450-125-20)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eExtruded carbon block with ion-exchange media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContaminant Reduction\u003c\/td\u003e\n\u003ctd\u003eLead, cysts (Cryptosporidium, Giardia, Entamoeba, Toxoplasma), chlorine taste \u0026amp; odor, chloramines, VOCs, turbidity, sediment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Characteristics\u003c\/td\u003e\n\u003ctd\u003eLow pressure drop, high dirt holding capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\" Big Blue filter housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Life\u003c\/td\u003e\n\u003ctd\u003eVaries by water quality and flow rate; monitor pressure drop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003eCold water applications (check manufacturer specs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere to Use This Filter\u003c\/h2\u003e\n\u003cp\u003eThe KX MatriKX Pb1 06-450-20-MATRIKX is designed for 20-inch Big Blue housings in whole-house, commercial, and well water treatment systems. It's ideal for applications requiring lead reduction in potable water, especially in homes with aging plumbing or municipal supplies with elevated lead levels. This filter also protects downstream equipment like water heaters, softeners, and RO systems from sediment and chemical contaminants while improving taste and odor. Compatible with any standard 20\" x 4.5\" housing; verify flow rate requirements for your specific application.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e The MatriKX Pb1 uses dual-mode lead reduction—ion exchange for dissolved lead and mechanical filtration for particulate lead—making it more effective than carbon-only filters. This is the factory-recommended replacement for the discontinued 06-450-125-20 model.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"KX Technologies","offers":[{"title":"Default Title","offer_id":35474750472354,"sku":"06-450-20-MATRIKX(R) - GWW","price":172.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/kx-technologies-06-450-20-matrikx-20-x-45-matrikx-pb1-05-micron-chlorinechloramine-voc-cyst-lead-filter-803899.jpg?v=1762461377"},{"product_id":"hydronix-smcb-4520-nsf-carbon-block-filter-4-5-x-20-0-5m","title":"Hydronix - SMCB-4520 - NSF Carbon Block Filter 4.5\" x 20\", 0.5m","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHydronix Professional Series\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eSMCB-4520\u003c\/em\u003e NSF Certified Carbon Block Filter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eIndustrial-grade 4.5\" x 20\" carbon block filtration at 0.5 micron for whole house, commercial, and well water applications\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eNSF Certified\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e0.5 Micron\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" Length\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHigh-capacity carbon block filtration for demanding applications\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🧱\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eSolid Carbon Block\u003c\/h3\u003e\n\u003cp\u003eCompressed activated carbon removes chlorine, taste, odor, and organic contaminants through depth filtration with consistent 0.5 micron rating throughout the entire filter life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📏\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eExtended 20\" Length\u003c\/h3\u003e\n\u003cp\u003eThe 4.5\" x 20\" dimensions provide significantly higher surface area and flow capacity compared to standard 10\" filters, ideal for whole house and commercial installations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e✓\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eNSF Certified Materials\u003c\/h3\u003e\n\u003cp\u003eMeets NSF standards for material safety and contaminant reduction claims, giving you third-party verification for municipal and well water treatment applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eWell Water Ready\u003c\/h3\u003e\n\u003cp\u003eThe 0.5 micron rating handles fine sediment while activated carbon addresses organic compounds, chlorine, and taste issues common in private well systems\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eStandard 20\" Big Blue housings\u003c\/h3\u003e\n\u003cp\u003eThe Hydronix SMCB-4520 fits all standard 20-inch filter housings with 4.5\" outer diameter capacity, including Pentek, Culligan, and generic Big Blue style housings. Common compatible housing models include Pentek 20-BB, Hydronix HF2-20BB4, and similar 20\" x 4.5\" sump designs for whole house and commercial applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eReplacement schedule for optimal performance\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e6-12 Months\u003c\/div\u003e\n\u003ch4\u003eWhole House \u0026amp; Municipal\u003c\/h4\u003e\n\u003cp\u003eReplace every 6-12 months depending on water quality and household size. Higher chlorine levels and larger families require more frequent changes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e3-6 Months\u003c\/div\u003e\n\u003ch4\u003eWell Water Applications\u003c\/h4\u003e\n\u003cp\u003eWell water with higher organic content, tannins, or sediment load may require replacement every 3-6 months to maintain flow rate and taste quality\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAs Needed\u003c\/div\u003e\n\u003ch4\u003eCommercial \u0026amp; High Volume\u003c\/h4\u003e\n\u003cp\u003eMonitor pressure drop and flow rate. Replace when pressure differential exceeds 15 PSI or when taste and odor issues return\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏭\u003c\/div\u003e\n\u003ch4\u003eCommercial Grade\u003c\/h4\u003e\n\u003cp\u003eBuilt for high-demand installations with extended filter life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🌊\u003c\/div\u003e\n\u003ch4\u003eSuperior Filtration\u003c\/h4\u003e\n\u003cp\u003e0.5 micron carbon block removes sediment and chemical contaminants\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔧\u003c\/div\u003e\n\u003ch4\u003eEasy Replacement\u003c\/h4\u003e\n\u003cp\u003eStandard sizing fits existing 20\" Big Blue housings without modification\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💪\u003c\/div\u003e\n\u003ch4\u003eHydronix Reliability\u003c\/h4\u003e\n\u003cp\u003eTrusted brand with consistent quality and NSF certification\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Isopure Water","offers":[{"title":"Default Title","offer_id":35475052986530,"sku":"SMCB-4520","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hydronix-smcb-nsf-carbon-block-filter-45-x-20-05m-395716.jpg?v=1759501232"},{"product_id":"ipw-industries-inc-pack-of-2-whole-house-20-x-4-5-big-blue-pleated-polyester-sediment-filter-replacement-cartridge-30-micron-compatible-with-pentek-r30-20bb","title":"IPW Industries Inc- Whole House 20\" x 4.5\" Big Blue Pleated Polyester Sediment Filter Replacement Cartridge 30 Micron","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eIPW Industries Inc | Whole House Sediment Filtration\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Big Blue \u003cem\u003ePleated Polyester Sediment Filter\u003c\/em\u003e 30 Micron\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eWashable, reusable pleated sediment cartridge engineered for whole house water treatment systems requiring reliable 30 micron filtration\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Compatible with Pentek R30-20BB\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Washable \u0026amp; Reusable\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 4–6 Month Service Life\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Big Blue 20x4.5 Standard\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThis \u003cstrong\u003e30 micron pleated polyester sediment filter\u003c\/strong\u003e is designed as a direct replacement for Pentek R30-20BB cartridges in whole house Big Blue filter housings. The washable pleated design extends service life to \u003cstrong\u003e4–6 months depending on water quality\u003c\/strong\u003e, while capturing sand, silt, rust, and sediment particles down to 30 microns across the entire \u003cstrong\u003e20\" x 4.5\"\u003c\/strong\u003e cartridge surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFilter Cartridge Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" length x 4.5\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePleated polyester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eService Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4–6 months (water quality dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaintenance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWashable and reusable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhole house sediment filtration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBig Blue 20\" x 4.5\" housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eDirect Replacement Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis IPW Industries Inc pleated sediment filter is manufactured to the same dimensional and performance specifications as the Pentek R30-20BB and other industry-standard 30 micron 20x4.5 inch pleated polyester sediment filters. It fits any standard Big Blue 20\" x 4.5\" filter housing used in whole house water filtration systems. Ideal for municipal or well water applications where moderate sediment filtration is required before carbon filters, water softeners, or other downstream treatment equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eIPW Industries Inc manufactures replacement filter cartridges to OEM specifications, delivering reliable performance at a better value than original equipment brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"IPW Industries Inc","offers":[{"title":"Single","offer_id":42814125736107,"sku":"IPW (1) SC-20PT-BP-30","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Pack of 2","offer_id":42814125768875,"sku":"IPW (2) SC-20PT-BP-30","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 4","offer_id":43038431215787,"sku":"IPW (4) SC-20PT-BP-30","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Pack of 6","offer_id":42864592879787,"sku":"IPW (6) SC-20PT-BP-30","price":145.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537694154914-padded.jpg?v=1777265878"},{"product_id":"2-stage-whole-house-water-filter-system-w-20-inch-big-blue-housing-1-inch-inlet-outlet-and-4-5x20-5-micron-pp-carbon-filters","title":"2 Stage Whole House Water Filter System w- 20-Inch Big Blue Housing -1 Inch Inlet-Outlet and 4.5\"x20\" 5 Micron PP + Carbon Filters","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;max-width:660px;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);max-width:540px;font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:grid;grid-template-columns:36px 1fr;gap:0 12px;position:relative;min-width:0;align-items:start;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex-shrink:0;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;min-width:0;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;width:100%;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:inline-block;font-size:13px !important;font-weight:700;letter-spacing:.05em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:4px 10px;border-radius:6px;margin-bottom:8px;white-space:normal;word-break:break-word;max-width:100%;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:flex;align-items:flex-start;gap:14px;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;flex-shrink:0;min-width:28px;line-height:1 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;flex:1;min-width:0;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n  \u003cdiv class=\"ro-hero\"\u003e\n    \u003cdiv class=\"ro-eyebrow\"\u003eComplete 2-Stage Whole House Filtration System\u003c\/div\u003e\n    \u003ch2\u003e\n\u003cem\u003e20-Inch Big Blue Water Filter System\u003c\/em\u003e with 1\" NPT Ports\u003c\/h2\u003e\n    \u003cp class=\"ro-tagline\"\u003eDual 20x4.5\" housings with 5 micron sediment and carbon block filters for comprehensive whole house filtration at 5-15 GPM\u003c\/p\u003e\n    \u003cdiv class=\"ro-badges\"\u003e\n      \u003cspan class=\"ro-badge\"\u003e✓ Complete install kit included\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003e✓ 1 inch inlet\/outlet ports\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003e✓ High-capacity 20\" housings\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003e✓ 6-12 month filter life\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-callout\"\u003e\n    \u003cp\u003eThis complete two-stage system installs at your main water line to deliver filtered water throughout your entire home. Includes two 20-inch Big Blue housings with \u003cstrong\u003e1\" NPT threaded ports\u003c\/strong\u003e for high flow applications, pre-installed with a \u003cstrong\u003e5 micron polypropylene sediment filter\u003c\/strong\u003e and \u003cstrong\u003ecarbon block filter\u003c\/strong\u003e, plus all mounting hardware and wrenches. Rated for \u003cstrong\u003e5-15 GPM\u003c\/strong\u003e depending on inlet pressure.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n    \u003ch3 class=\"ro-title\"\u003eComplete whole house protection in two stages\u003c\/h3\u003e\n    \u003cdiv class=\"ro-feature-grid\"\u003e\n      \u003cdiv class=\"ro-feature-card\"\u003e\n        \u003cspan class=\"ro-feat-icon\"\u003e🔵\u003c\/span\u003e\n        \u003ch3\u003eStage 1: Sediment Filtration\u003c\/h3\u003e\n        \u003cp\u003e5 micron polypropylene filter removes silt, sand, rust, dirt, and particulates. Visual color indicator shows filter life—replace when darkened to yellow or brown.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ro-feature-card\"\u003e\n        \u003cspan class=\"ro-feat-icon\"\u003e⬛\u003c\/span\u003e\n        \u003ch3\u003eStage 2: Carbon Block\u003c\/h3\u003e\n        \u003cp\u003eCarbon block filter removes chlorine, taste, odors, and very fine particulates for clean water from every tap and appliance in your home.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ro-feature-card\"\u003e\n        \u003cspan class=\"ro-feat-icon\"\u003e🏠\u003c\/span\u003e\n        \u003ch3\u003eHigh Flow 1\" Ports\u003c\/h3\u003e\n        \u003cp\u003e1 inch NPT inlet and outlet ports support flow rates of 5-15 GPM, designed for whole house applications with minimal pressure drop.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ro-feature-card\"\u003e\n        \u003cspan class=\"ro-feat-icon\"\u003e🔧\u003c\/span\u003e\n        \u003ch3\u003eComplete Install Kit\u003c\/h3\u003e\n        \u003cp\u003eIncludes two 20\" Big Blue housings with pressure release, two plastic wrenches, two metal mounting brackets, all screws, and both filters pre-selected.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ro-feature-card\"\u003e\n        \u003cspan class=\"ro-feat-icon\"\u003e💪\u003c\/span\u003e\n        \u003ch3\u003eHeavy-Duty Construction\u003c\/h3\u003e\n        \u003cp\u003eStandard 4.5\" diameter x 20\" height housings rated to 90 psi maximum, 40-110°F operating temperature. Built for demanding residential applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ro-feature-card\"\u003e\n        \u003cspan class=\"ro-feat-icon\"\u003e📅\u003c\/span\u003e\n        \u003ch3\u003eExtended Service Life\u003c\/h3\u003e\n        \u003cp\u003eFilters last 6-12 months depending on water quality and usage. Housings have 5-year shelf life. Easy cartridge replacement with included wrenches.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n    \u003ch3 class=\"ro-title\"\u003eSystem specifications and requirements\u003c\/h3\u003e\n    \u003cp\u003eDesigned for installation at the main water supply for homes requiring whole house filtration. Uses standard 4.5\" OD x 20\" height replacement cartridges. Maximum operating pressure 90 psi (pressure regulator recommended if supply exceeds 80 psi, set to 60 psi or less). Temperature range 40-110°F (5-45°C). Protect housings from freezing. Lubricate o-ring seals with silicone grease during installation and cartridge changes to ensure proper seating and prevent leaks. Some assembly required—search \"big blue whole house water filter\" for video installation guides. Manufactured by IPW Industries Inc.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-callout\"\u003e\n    \u003cp\u003eEvery component selected for reliable whole house performance, backed by IPW Industries quality manufacturing standards.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"IPW Industries Inc","offers":[{"title":"Default Title","offer_id":35475109707938,"sku":"(2) B908(1) Sed (1) CB (2) Wrench (2) BR","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537716994210-padded.jpg?v=1777247269"},{"product_id":"hydronix-spc-series-20-x-4-5-polyester-pleated-sediment-filter","title":"Hydronix - SPC Series - 20\" x 4.5\" Polyester Pleated Sediment Filter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHydronix SPC Series\u003c\/div\u003e\n\u003ch2\u003e20\" x 4.5\" Polyester Pleated \u003cem\u003eSediment Filter\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eWashable, reusable pleated polyester cartridge with high dirt-holding capacity for residential and commercial whole-house and well water systems\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e5 Micron\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e20\" x 4.5\"\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eWashable\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eANSI\/NSF 42\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBuilt for high-flow sediment removal in demanding applications\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📐\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eDeep Pleated Design\u003c\/h3\u003e\n\u003cp\u003eNon-woven 100% polyester pleated media maximizes surface area for superior dirt-holding capacity compared to string-wound or spun filters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔄\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eWashable \u0026amp; Reusable\u003c\/h3\u003e\n\u003cp\u003eUnlike disposable sediment cartridges, the Hydronix SPC series can be washed and reused multiple times, reducing long-term replacement costs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🛡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eChemical Resistant\u003c\/h3\u003e\n\u003cp\u003ePolyester media with polypropylene core and vinyl plastisol end caps resist chemical and bacterial degradation in challenging water conditions\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🌡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eWide Temp Range\u003c\/h3\u003e\n\u003cp\u003eRated for continuous operation from 40°F to 125°F, suitable for cold well water and warm commercial applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚙️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eUniversal Fit\u003c\/h3\u003e\n\u003cp\u003eStandard 20\" x 4.5\" dimensions fit most commercial and residential Big Blue filter housings without adapters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFits standard 20\" x 4.5\" housings\u003c\/h3\u003e\n\u003cp\u003eThe Hydronix SPC series fits all standard 20-inch Big Blue filter housings with 4.5\" inner diameter, including Pentek, Pentair, Culligan, GE, Whirlpool, iSpring, and generic whole-house filter systems. Compatible with both residential whole-house systems and commercial applications requiring high-flow sediment reduction.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWash and reuse, or replace when performance drops\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eEvery 3-6 months\u003c\/div\u003e\n\u003ch4\u003eRinse and Reinstall\u003c\/h4\u003e\n\u003cp\u003eRemove cartridge and rinse thoroughly under running water to dislodge accumulated sediment. Allow to dry before reinstalling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAfter 3-5 washes\u003c\/div\u003e\n\u003ch4\u003eReplace Cartridge\u003c\/h4\u003e\n\u003cp\u003eOnce flow rate drops or washing no longer restores performance, replace with a new Hydronix SPC cartridge. Actual lifespan depends on sediment load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eWhole-House Protection\u003c\/h4\u003e\n\u003cp\u003eRemoves sand, silt, rust, and sediment before they reach fixtures, appliances, and downstream filters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🏭\u003c\/div\u003e\n\u003ch4\u003eCommercial Grade\u003c\/h4\u003e\n\u003cp\u003eHigh-capacity design handles heavy sediment loads in well water, agricultural, and light industrial applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eNSF Certified Materials\u003c\/h4\u003e\n\u003cp\u003eMeets ANSI\/NSF Standard 42 material requirements for safe contact with potable water\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eCost Effective\u003c\/h4\u003e\n\u003cp\u003eWashable design extends service life and reduces replacement frequency compared to disposable sediment cartridges\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hydronix","offers":[{"title":"1 Micron","offer_id":41997972897963,"sku":"SPC-45-2001","price":32.5,"currency_code":"USD","in_stock":true},{"title":"5 Micron","offer_id":41997972930731,"sku":"SPC-45-2005","price":35.01,"currency_code":"USD","in_stock":true},{"title":"20 Micron","offer_id":41997972996267,"sku":"SPC-45-2020","price":32.5,"currency_code":"USD","in_stock":true},{"title":"30 Micron","offer_id":41997973061803,"sku":"SPC-45-2030","price":32.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537727709346-padded.jpg?v=1777265522"},{"product_id":"20-big-blue-1-micron-whole-house-water-filter-4-5-x-20-pack-of-2-by-ipw-industries-inc","title":"20\" Big Blue 1 MICRON Whole House Water Filter 4.5\" x 20\" - Pack of 2 by IPW Industries Inc.","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;max-width:660px;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);max-width:540px;font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:grid;grid-template-columns:36px 1fr;gap:0 12px;position:relative;min-width:0;align-items:start;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex-shrink:0;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;min-width:0;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;width:100%;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:inline-block;font-size:13px !important;font-weight:700;letter-spacing:.05em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:4px 10px;border-radius:6px;margin-bottom:8px;white-space:normal;word-break:break-word;max-width:100%;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:flex;align-items:flex-start;gap:14px;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;flex-shrink:0;min-width:28px;line-height:1 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;flex:1;min-width:0;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n  \u003cdiv class=\"ro-hero\"\u003e\n    \u003cdiv class=\"ro-eyebrow\"\u003eIPW Industries Inc.\u003c\/div\u003e\n    \u003ch2\u003e20\" Big Blue 1 Micron Sediment Filter (Pack of 2)\u003c\/h2\u003e\n    \u003cdiv class=\"ro-tagline\"\u003e4-layer melt-blown polypropylene cartridges for whole house sediment removal in 20\" x 4.5\" Big Blue housings\u003c\/div\u003e\n    \u003cdiv class=\"ro-badges\"\u003e\n      \u003cspan class=\"ro-badge\"\u003e1 Micron Nominal\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003eMelt-Blown Polypropylene\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003eGraded Density\u003c\/span\u003e\n      \u003cspan class=\"ro-badge\"\u003eUniversal Fit\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-callout\"\u003e\n    \u003cp\u003eThese IPW Industries 20\" x 4.5\" sediment filters use 4-layer graded density construction to capture silt, rust, and fine particulate down to 1 micron. Each cartridge arrives individually wrapped and serves as a universal replacement for any standard 20\" Big Blue whole house system requiring nominal 1 micron filtration.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n    \u003ch3 class=\"ro-title\"\u003eFilter Details\u003c\/h3\u003e\n    \u003ctable class=\"specs-table\"\u003e\n      \u003ctr\u003e\n        \u003ctd class=\"spec-key\"\u003eDimensions\u003c\/td\u003e\n        \u003ctd class=\"spec-value\"\u003e20\" x 4.5\"\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd class=\"spec-key\"\u003eMicron Rating\u003c\/td\u003e\n        \u003ctd class=\"spec-value\"\u003e1 Micron Nominal\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd class=\"spec-key\"\u003eMaterial\u003c\/td\u003e\n        \u003ctd class=\"spec-value\"\u003eMelt-Blown Polypropylene\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd class=\"spec-key\"\u003eConstruction\u003c\/td\u003e\n        \u003ctd class=\"spec-value\"\u003e4-Layer Graded Density\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd class=\"spec-key\"\u003eService Life\u003c\/td\u003e\n        \u003ctd class=\"spec-value\"\u003e4-6 months (typical)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd class=\"spec-key\"\u003eQuantity\u003c\/td\u003e\n        \u003ctd class=\"spec-value\"\u003ePack of 2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd class=\"spec-key\"\u003eApplication\u003c\/td\u003e\n        \u003ctd class=\"spec-value\"\u003eWhole House Sediment\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"ro-section\"\u003e\n    \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n    \u003ch3 class=\"ro-title\"\u003eUniversal 20\" Big Blue Fit\u003c\/h3\u003e\n    \u003cp\u003eThese IPW Industries cartridges are designed as universal replacements for any 20\" x 4.5\" Big Blue filter housing. The standard dimensions and end cap design ensure compatibility with housings from Pentek, Hydronix, Culligan, GE, and other manufacturers using the 20\" Big Blue format. Replace every 4-6 months depending on sediment load and household water usage.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"IPW Industries Inc","offers":[{"title":"Default Title","offer_id":35475154698402,"sku":"IPW (2) x SC45-200001","price":44.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537740357794-padded.jpg?v=1791927584"},{"product_id":"pack-of-4-compatible-replacement-filters-for-pelican-water-pc40-20-20-x-4-5-5-micron-sediment-replacement-filters-and-o-rings-by-ipw-industries-inc","title":"Pack of 4 Compatible Replacement Filters for Pelican Water PC40-20 20\" x 4.5\" 5 Micron Sediment Replacement Filters and O-rings by IPW Industries Inc.","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  .ro-wrap {\n    --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n    --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n    --gold:#f59e0b;--radius:12px;\n    font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n  }\n  .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n  .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n  .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n  .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n  .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n  .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n  .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n  .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n  .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n  .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n  .ro-wrap .ro-callout strong{color:var(--ocean);}\n  .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n  .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n  .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n  .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n  .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n  .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n  .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n  .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n  .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n  .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n  .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n  .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n  .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n  .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n  .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n  .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n  .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n  .ro-wrap .specs-table td:last-child{color:var(--muted);}\n  .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n  .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n  .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n  .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n  .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n  .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n  .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n  .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n  .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n  .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n  .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n  .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n  .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n  .ro-wrap .pro-tip strong{color:#3d2e00;}\n  .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n  .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n  .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n  .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n  .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n  .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n  .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n  .ro-wrap .benefit-item:last-child{border-right:none;}\n  .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n  .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n  .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n  .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n  .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n  .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n  .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n  .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n  .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n  .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n  .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n  .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n  @media(max-width:640px){\n    .ro-wrap .ro-hero{padding:36px 24px 32px;}\n    .ro-wrap .ro-section{padding:28px 20px;}\n    .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n    .ro-wrap .benefits-strip{flex-direction:column;}\n    .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n  }\n  \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n  .ro-wrap p,\n  .ro-wrap li,\n  .ro-wrap td,\n  .ro-wrap th,\n  .ro-wrap .ro-section \u003e p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap .ro-section \u003e p,\n  .ro-wrap .ro-callout p,\n  .ro-wrap .stage-body p,\n  .ro-wrap .ro-feature-card p,\n  .ro-wrap .schedule-card p,\n  .ro-wrap .faucet-card p,\n  .ro-wrap .spec-card .sc-note,\n  .ro-wrap .pro-tip p {\n    font-size: 18px !important;\n    line-height: 1.6 !important;\n  }\n  .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n  .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n  .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n  .ro-wrap .ro-label,\n  .ro-wrap .stage-tag,\n  .ro-wrap .sc-label { font-size: 14px !important; }\n  .ro-wrap .ro-title { font-size: 24px !important; }\n  .ro-wrap .interval { font-size: 22px !important; }\n  .ro-wrap .stage-num { font-size: 16px !important; }\n  .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n  .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThis pack of four 20\" x 4.5\" meltblown sediment filters from IPW Industries delivers reliable 5-micron filtration for whole-house, well, and commercial water systems. Each filter includes an O-ring and is designed as a compatible replacement for Pelican Water PC40-20 cartridges, offering the same filtration performance at a competitive value.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCore Filter Specifications\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e20\" × 4.5\"\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eStandard Big Blue size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMicron Rating\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e5 Micron\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eSediment filtration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePack Quantity\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e4 Filters\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eIncludes 4 O-rings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eMeltblown\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePolypropylene media\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003ePelican PC40-20\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eCompatible replacement\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eManufacturer\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eIPW Industries\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eISO-certified production\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Media \u0026amp; Construction\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eMeltblown polypropylene sediment filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration Grade\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Construction\u003c\/td\u003e\n\u003ctd\u003eGraded density, thermally bonded fibers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard 20\" Big Blue housings with 4.5\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eO-Ring Seal\u003c\/td\u003e\n\u003ctd\u003eFour O-rings included (one per filter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Life\u003c\/td\u003e\n\u003ctd\u003e3-6 months typical (varies by water quality and flow)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003ePelican Water PC40-20 and equivalent 20\" × 4.5\" housings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere These Filters Work\u003c\/h2\u003e\n\u003cp\u003eThese IPW Industries replacement filters are engineered to fit Pelican Water PC40-20 systems and any standard 20-inch Big Blue housing with a 4.5-inch diameter. They are ideal for whole-house water filtration, well water pretreatment, and commercial sediment reduction applications. The 5-micron rating captures sand, silt, rust, and particulate matter before it reaches your fixtures, appliances, or downstream filters. Pelican Water is a registered trademark of its respective owner; IPW Industries manufactures these filters as compatible aftermarket replacements with no affiliation or endorsement implied.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 Replace sediment filters every 3 to 6 months or when you notice a pressure drop. Buying in packs of four keeps you stocked for a full year of maintenance without reordering.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"IPW Industries Inc","offers":[{"title":"Default Title","offer_id":35475227803810,"sku":"IPW: (4) SC-20SW-BP-5 (4) HOR-02","price":109.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537762705570-padded.jpg?v=1777267867"}],"url":"https:\/\/www.isopurewater.com\/collections\/filters-for-20-inch-big-blue-housings.oembed?page=7","provider":"Isopure Water","version":"1.0","type":"link"}