Watts-SF-20 Watts String Wound Cartridge Standard 20" in Size:50 Micron Lasts 5× longer than carbon

Lasts 5× longer than carbon block cartridges thanks to KDF's catalytic action and resistance to fouling from organics

Drop-In Simplicity

This faucet works with any RO system using standard tubing connections and is particularly well-suited for installations where backflow prevention is required by municipal regulations

housing cracks

650709-009

Watts-SF-20 Watts String Wound Cartridge Standard 20" in Size:50 Micron Lasts 5× longer than carbonThe Watts SF 20 string wound sediment filter delivers reliable mechanical filtration for whole house and under counter systems, removing particles down to 20 or 50 microns depending on the variant you choose. Built with 100% polypropylene construction, this 20" x 2. 5" cartridge offers superior chemical resistance and zero media migration for consistently clean water. SPECIFICATIONS Watts SF 20 Core Specs Dimensions 20" x 2. 5" Standard cartridge size