The Pentair Pentek C1-20 cartridge delivers dual-purpose water filtration by combining powdered activated carbon with cellulose media in a standard 20" x 2.5" cartridge. This design captures fine sediment particles down to 5 microns while simultaneously reducing chlorine taste and odor, eliminating the need for separate filtration stages in your whole house system. Engineered for standard 20-inch filter housings, the C1-20 provides over 10,000 gallons of chlorine reduction capacity at 2 gpm, making it one of the most economical options for municipal water supplies. The external polyethylene netting reinforces the cartridge structure and increases dirt-holding capacity, while vinyl plastisol endcaps ensure a secure seal. Operating temperature range is 40-125 degrees F with a low 1 psi pressure drop at 5 gpm. Replace the cartridge when you notice reduced water flow or a return of chlorine taste. For use with chlorinated municipal water supplies only, as cellulose media may be susceptible to bacterial attack in non-chlorinated supplies. This 14-pack keeps you stocked with replacements for consistent, reliable water quality.