Culligan WHR-140 Replacement Shower Filter Cartridge for WSH-C125, HSH-C135, ISH-100 Shower Units - 4 Pack *Warning: Culligan can only guarantee the quality of materials, construction and the certification claims of WHR-140 filters manufactured by Culligan, other brands' Filters that call out "Culligan WHR-140 compatible" Are not affiliated with Culligan and are not nsf, using these filters will void the 5 year limited warranty on Culligan filtered shower heads. *Each WHR-140 filter cartridge filters sulfur odor, chlorine, and scale for a full 10, 000 gallons or 6 months giving softer, cleaner skin and hair. *Patented filter media bacteriostatic*, limits passage and growth of bacteria for a cleaner shower experience. *System tested and certified by nsf international against ansi standard 177. Filter cartridge easily installs in Culligan shower heads. *Replacement cartridge for models: wash-c125, rdsh-c115, hsh-c135, hsh-bn135, stylish and-100, stylish and-200, stylish and-300, s-h200-c, s-h200-bn, s-w100-c, s-w100-bn