Culligan IC 1 EZ-Change Inline Icemaker and Refrigerator Filtration System, Basic 3,000 Gallon Filter Included Inline refrigerator and icemaker filter with easy change filter EZ change replacement filter cartridge with quick connect fittings, just twist on and twist off The included RC-EZ-1 filter cartridge reduces: particulates class III, chloride and removes bad taste and odor from water The included RC-EZ-1 filter cartridge is tested and certified by NSF International to NSF/ANSI Standard 42 for the aesthetic reduction of Chlorine Taste and Odor and Nominal Particulate Class III The included RC-EZ-1 cartridge can filter up to 3,000 gallons of water or can last for 12 months Includes: head assembly, RC-EZ-1 filter cartridge, mounting screws, cartridge change reminder sticker Head assembly fits replacement cartridges, RC-EZ-1, RC-EZ-3 and RC-EZ-4 Water flow rate from faucet, .5 gpm at 60 psi Features twist-on and twist-off mechanism, quick connect fittings double water shutoff NSF certified 3000-gallon capacity Reduces bad taste and odor, chlorine taste and odor, and particulate class III Uses RC-EZ-1 replacement cartridge