RO-Pure GAC Post Carbon Filter
The final polish in the RO-Pure system — a granular activated carbon stage that strips residual chlorine taste and odor right before the water reaches your glass.
The taste stage, done right
Reverse osmosis removes the dissolved solids — but it's the post carbon filter that determines how the water actually tastes coming out of the faucet. The Watts Premier 105341 packs high-grade granular activated carbon into the RO-Pure's final stage, where stored RO water passes through on its way to the dispenser.
As water moves across the carbon bed, adsorption pulls residual chlorine, dissolved gases, and organic compounds onto the surface of the granules. The result is clean, crisp water free of the flat or chemical aftertaste that can develop in the storage tank between draws.
Built for the RO-Pure platform
This is a system-specific cartridge. The 105341 is engineered for the Watts Premier RO-Pure family and its matching housings — it will not fit standard 10″ slim-line housings.
Confirm your system model before ordering. If you run a different RO unit, reach out and we'll cross-reference the correct post filter for you.
| Manufacturer | Watts Premier |
| Part Number | 105341 (SKU F105341) |
| Filter Type | Granular Activated Carbon (GAC) post filter |
| Micron Rating | 20 micron nominal |
| Reduces | Chlorine taste & odor, dissolved organics |
| Dimensions | 12″ length × 2.5″ outer diameter |
| Replacement Interval | Every 12 months* |
| Compatible Systems | Watts Premier RO-Pure / RO-4 / Filter-Pure |
*Filter life varies with local water quality and household usage.
