Valve-in-Head Culligan Whole House Sediment Water Filter - HF360 valve-in-head water filter extends life of washing machines, water heaters, and other household appliances. Reduces dirt, sand, silt, rust, and scale particles. Has built-in shutoff valve in cap for easy cartridge changes, clear housing for monitoring cartridge life. 3/4" inlet/outlet for installation on 1/2" or 3/4" main cold water lines. Dynamically sealing, self-cleaning O-rings prevent leaks and clogging. Filter housing wrench included. Use replacement cartridge model - Size: 3/4 In. Inlet/Outlet, Pkg Qty: 1, Package Type: Box