Built to fit into the Evolution-RO1000 reverse osmosis water filtration system, the 22043 KDF Hydrologic carbon pre-filter helps reduce contaminants and impurities, including chlorine and chloramines, for up to 6 full months. Works effectively whether you use well water or municipal water. This unit installs easily and begins to perform immediately. <br /> <br /> <ul> <li>Significantly reduces chlorine and chloramines</li> <li>Ensures your water tastes great whether it comes from your city or your well</li> <li>Hydrologic Evolution-RO1000 carbon PreFilter HL22043 provides protection for the evolution reverse osmosis membrane element</li> <li>Genuine OEM product</li> <li>Materials: Plastic</li> <li>Set includes: One (1) KDF carbon pre filter</li> <li>Dimensions: 2.75 inches by 2.75 inches by 17.13 inches</li> </ul>