Pentair Everpure EV959201 ADC Quick Change Cartridge Everpure By SHURFLO ADC Inch Quick-Change Inch Full-Timer Cartridge - Fits all Ever pure Water Treatment Systems Exclusive Micro-Pure ?filter considerably reduces the taste and odor of chlorine, dirt, rust, cysts and asbestos for about one season Replacement is as easy as changing a light bulb Requires no tools Performance certified by NSF International