Pentek C1-20 # 155597 C-1 Taste & Odor 20 Inch Replacement Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner And Many Other Brands. C1 Activated Carbon-Impregnated Cellulose 5 Micron 20 Inch Taste & Odor Water Filter. 20" long X 2 1/2" diameter. 14 per case, sold individually. Ametek # 155597 C Series cartridges offer an economical solution for all your general-purpose water filtration needs. Constructed of a carbon impregnated cellulose media, these dual-purpose cartridges filter out fine sediment particles and reduce unwanted taste, odor and chlorine from your tap water. A polyester reinforcement backing and external netting provide additional strength and dirt-loading capacity. These dual-purpose cartridges are well suited for a wide range of residential applications, and make excellent polishing filters when used in process or closed-loop streams. Order a case and save even more.