Replacement Filters for the APEC CB3-SED-KDF-CAB20-BB 3-Stage Whole-House System
APEC CB3-SED-KDF-CAB20-BB
✅ Best value — replace everything at once
IPW 3-cartridge set — every replaceable stage in one order
✓ Guaranteed to fit your APEC CB3-SED-KDF-CAB20-BB
📋 Typical replacement: sediment every 3–6 months · carbon every 6–12 months · iron/KDF cartridge yearly
1
Pleated sediment
20×4.5 Big Blue
Replaces OEM FILTER-SET-CB3-KDF-20BB (set)
2
KDF-85 heavy metal
20×4.5 Big Blue
Replaces OEM FILTER-SET-CB3-KDF-20BB (set)
3
Sediment+carbon 2-in-1
20×4.5 Big Blue
Replaces OEM FILTER-SET-CB3-KDF-20BB (set)
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Compatibility reference only. Photos of complete systems shown on this page are provided to help you identify your unit and confirm that our filters fit. All brand names, model numbers, and product images are the property of their respective owners; Isopure Water (IPW Industries Inc.) is not affiliated with, sponsored by, or endorsed by these manufacturers. We sell compatible replacement filters and parts — not the branded systems pictured, unless a system is separately listed for sale on our store.
