The AP Easy LC Drinking Water System is an under the sink single cartridge system that utilizes a sanitary quick change design. The Aqua-Pure LC System reduces Chlorine Taste, Odor, Sediment, Scale, Lead, and Cyst. Built-in Bypass Valve - No need to shut off water for cartridge change. Features: LC Cooler 5617909 system includes a 1/4" ball valve and 1/4" tubing Easy to install, no special tools required 1/4" Quick Connect Fittings Manufactured from FDA CFR-21 compliant materials NSF Certified to Standard 42 & 53 System to be installed on primary kitchen or bath cold water line This system does NOT include a faucet NOTE: Closeout sale item with limited availability.