Replacement Filters for the Proline Plus Reverse Osmosis System
Proline Plus · 5-Stage Reverse Osmosis
Replacement Filters for the Proline Plus Reverse Osmosis System
Every filter your Proline Plus needs — stage by stage — led by the 1-year kit our customers reorder most.
Also sold as: Proline Plus · Proline Plus RO · Proline RO · Pro Line Plus
✓ Best value — all 5 filters incl. membrane
1-Year Filter Replacement Kit for Proline Plus RO (5 filters)
$70.99
5µm sediment + two Omnipure OMB934 5µm carbon blocks + Filmtec 50 GPD membrane + Omnipure CL10ROT33-B inline GAC post-filter.
🛒 Add the 5-filter kit to cartFilters by stage
Buy the set above, or replace stages individually below.
2
Carbon block (1st)
5µm coconut carbon block · 9.75" × 2.75"
3
Carbon block (2nd)
5µm coconut carbon block · 9.75" × 2.75"
4
RO membrane
50 GPD thin-film composite · 1812 size
5
Inline GAC post-filter
10" × 2" coconut GAC · ¼" female NPT
When to replace
🪣 Sediment & carbon blocks: every 12 months🥤 Inline GAC post-filter: every 12 months💧 RO membrane: every 24 months
Fits the Proline Plus with standard 10" housings and a ¼" threaded inline post-filter — not sure? call (714) 541-6600.
Not sure this is your system? Use the Isopure Water Filter Finder → Match by system name, by the part number printed on your current filter, or by snapping a photo.
Proline Plus RO filter FAQ
What filters does the Proline Plus RO system use?
Five: a 5 micron 10" × 2.5" sediment pre-filter, two Omnipure OMB934 5 micron carbon blocks, a 50 GPD RO membrane and an Omnipure CL10ROT33-B 10" inline GAC post-filter with ¼" female threads. The 1-year Proline Plus kit has all five in one box.
How often should I change the Proline Plus filters?
Change the sediment, both carbon blocks and the inline post-filter every 12 months. The membrane usually lasts about 24 months. Change the sediment filter sooner if flow drops.
Can I replace just the membrane?
Yes. The membrane is a standard 1812-size 50 GPD element. Order the Filmtec TW30-1812-50HR on its own, or call (714) 541-6600 if your housing looks different.
My cartridges look different. Will these still fit?
These parts fit Proline Plus units with standard 10" filter housings. If your system has quick-change or proprietary cartridges, call (714) 541-6600 with a photo and we will match it.
All replacement filters by system · RainSoft, Krystal Pure, Ameritek & Proline RO filters · Ameritek RO & Alkaline RO · Krystal Pure KR10 / KR15
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.
