Aqua Flo 4.5 in. x 20 in. Polyphosphate Replacement Water Filter Cartridge

High-Flow Whole House Scale Control and Filtration Polyphosphate media enclosed in a 5 micron spun polypropylene mesh casing allows for further reduction of particulate matter larger than 5 microns. Maximum recommended hardness 20 GPG. NSF / ANSI 42,NSF / ANSI 31 and NSF / ANSI 372 Certified.|No fiber release and media migration|Designed for purity, bacteria and chemical resistance|Filter life 3 to 6 months depending on incoming water quality|Fits in 160199 High-Flow Whole House Scale Control and Filtration System