Culligan US-600A Undersink Drinking Water Filtration System, Connects to Existing 3/8" Faucet Water Line, 1,000 Gallon Filter Included Undersink water filtration system that connects with existing kitchen faucet line providing cleaner filtered water for cooking or drinking Quick attach mounting brackets allow for easy installation and cartridge replacement The included D-20A filter cartridge reduce: Chloride and removes bad taste and odor from water The US-600A with D-20A is Tested and Certified by NSF International against NSF/ANSI Standard 42 for the reduction of aesthetic Chlorine Taste and Odor The included D-20A cartridge can filter up to 1,000 gallons of water or can last for 12 months Includes: filter housing assembly with built-in mounting bracket, 3/8" thick tubing, 2 quick connect elbows, SW-5A housing wrench and D-20A filter cartridge US-600A filter housing is compatible with replacement cartridges, D-10A, D-20A, D-30A and D-40A Water flow rate from faucet, 1 gpm at 60 psi