This replacement reverse osmosis cartridge is a tightly wound special membrane that removes dissolved solids and organic matter when water is forced through the cartridge.
Fits Sears / Kenmore Models: 625.384750, 625.385750, 7267970, 37233557, 7233557, 7267962, 7266186
Fits Whirlpool Models: WHER-18, WHER18, 7266186
Other Manufacturer Part Numbers: WWPWHER18