Use this Campbell CF4-H compact filter housing for Point-of-Use residential and commercial applications on 3/4" cold water lines. This housing is ideal for limited space installations such as under sink, recreational vehicles and boats. Select the exact filter cartridge to meet your needs. The opaque bowl features a pressure release button for easy cartridge changing. Included is 3 - 2 Pak of 2 micron filter cartridges, 3 - "o" rings & 1 Housing Wrench. (Total of 11 pieces)