RO Membrane
CFS Reverse Osmosis Membrane – 1 Pack – Fits Rainsoft TFC-RS9-50
Fits RainSoft
$29.99View details
Compatible replacement
Replacement filter cartridge compatible with 21191
Looking for a replacement filter cartridge for 21191? The CFS products below are compatible with 21191, size 10 x 2.5 in (254.0 x 63.5 mm). Our product listings name 21191 as a compatible number.
CFS compatible replacement, not an OEM part.
Fit details
| Compatible with | 21191 |
|---|---|
| Size | 10 x 2.5 in (254.0 x 63.5 mm) |
| Material | Carbon block |
| How we know | Cross-referenced: our product is listed as compatible with this number |
Our options
Carbon Block10
Subscribe & Save availableCFS Carbon Block Water Filter – 2 Pack – 10 Micron – Fits Rainsoft UF-50, UF-50T
Fits RainSoft
$22.27View details
Carbon Block5
Subscribe & Save availableCFS Carbon Block Water Filter Cartridges – 2 Pack – 5 Micron – Fits RainSoft 21179
Fits RainSoft
$21.62View details
RO Membrane5
Subscribe & Save availableCFS – 2 Pack Carbon Water Filter Cartridges and 50 GPD Membrane Compatible with Rainsoft UF50, UF50T, UF50N Models – Removes Bad Taste and Odor – Whole House Replacement Filter Cartridge – 5 Micron
Fits RainSoft
$53.55View details
Carbon Block10 x 2.5
Subscribe & Save availableCFS – 4 Pack Activated Carbon Block Water Filter Cartridges Compatible with Rainsoft 21179 Model – Removes Bad Taste & Odor – Whole House Replacement Filter Cartridge – Universal 10" Filter Cartridge
Fits RainSoft
$28.99View details
Carbon Block
Subscribe & Save availableCFS – Carbon Block Water Filter Cartridges Compatible with Rainsoft UF22, UF22T, UF-50, UF-50T Models – Removes Bad Taste and Odor – Whole House Replacement Filter Cartridge
Fits RainSoft
$21.21View details
Carbon
Subscribe & Save availableCFS – Carbon Water Filter Cartridges Compatible with RainSoft 21179, Ultrefiner UF50 Models – Remove Bad Taste and Odor – Whole House Replacement Filter Cartridge
Fits RainSoft
$14.99View details
Filter Set5
Subscribe & Save availableCFS COMPLETE FILTRATION SERVICES - 1-Year Replacement Filter Kit with Membrane for RainSoft UF50 Reverse Osmosis System -
Fits RainSoft
$54.10View details
Carbon Block510 x 2.5
Pack of 12 Carbon Block Filters Compatible with Rainsoft UF-50, UF-50T
Fits RainSoft
$44.99View details
Also fits
The same products also fit: