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CFS RO Filter Kit and 50 GPD Membrane for ROT-5 RO-2550 RO-2500-6 Pc | Two sediment, two carbon blocks, an inline post filter 1/4" FPT and a 50 GPD membrane. Full service.
- Six Pieces in Stage Order
- Everything Your Ro System Needs in One Box
- Purer Water From Every Source
- Fits These Systems
$69.99
Price as of Oct 16, 2026, 7:48 AM UTC. Prices and availability are subject to change. The price shown on Amazon at the time of purchase applies.
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Key features
Six Pieces in Stage Order
Two 5 micron spun polypropylene sediment filters go first and hold back the sand, silt and rust that would blind everything behind them. Two coconut shell carbon blocks follow, and that pair matters most: chlorine reaching the membrane is what shortens membrane life fastest. The 50 GPD membrane strips dissolved solids, and the inline post filter polishes on the way to the faucet.
Everything Your Ro System Needs in One Box
This kit includes two 5 micron sediment filter cartridges in 100 percent polypropylene for standard 10 inch housings, two coconut shell carbon block filters, and one granular activated carbon inline post filter with a quarter inch FPT connection, for a 50 GPD system. All five drop into the housings you already have, so a full service takes one order.
Purer Water From Every Source
On municipal tap or private well supply, the membrane strips dissolved solids — low-TDS water for drinking and cooking from the system you already own. RO reduces TDS broadly; for certified reduction of specific contaminants, look for systems tested to NSF/ANSI 58 for those claims.
Fits These Systems
Full service set for the Aquasky ROT-5 and the Pentek RO-2550 and RO-2500, and for most other four and five stage systems taking 10 by 2.5 inch cartridges, including PWRO4, WP-RO4, P500PP4ST, VRO-4 and PT-RO4-50-NP. The inline post filter has quarter inch female pipe thread connections, not push to connect. The ROT-4 takes cartridges an inch shorter and this set will not fit it.
CFS RO Filter Kit and 50 GPD Membrane for ROT-5 RO-2550 RO-2500-6 Pc | Two sediment, two carbon blocks, an inline post filter 1/4" FPT and a 50 GPD membrane. Full service.
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