The QE water filter kit is easily installed on 3/4” copper or plastic cold water tubing. This mini water plant includes a filter cartridge that offers 2 full-stage filtrations, 5-micron grooved polypropylene fiber levels, and granular activated carbon. For home or small business water use. If water tap is not being used daily, it is recommended that you run (flush) the tap water for at least 10 seconds prior to use. The QE universal kitchen filter kit’s specifications include: complete resistance to rust/corrosion, 3/4” inlet/outlet pipe thread (must use liquid seal), withstands water pressure to 125 PSI, built-in manual bleed valve button, top seated “O” ring gasket (recommend dipping in silicone for ultimate seal), accepts most standard 9-3/4” cartridges, fast cartridge change, and includes (1) dual filtration cartridge.