CFS COMPLETE FILTRATION SERVICES EST.2006 Compatible to Pentek P25-20 Spun Polypropylene Filter Cartridge, 20" x 2-3/8" 4 Pack
The sediment pre-filter is designed to prevent dirt and particles from entering the system and clogging the main filter unit. Designed for easy filter replacement, no plumber required. Filter should be replaced every 1-3 months depending on TDS levels (total dissolved solids) and water quality - replace when you notice that the color of the filter darkens or water flow slows down.