GE Refrigerator Water Filter (3 Pack) - RPWFE3PKProduct Description For best filtration results filter cartridge should be replaced every six months or 300 gallons Tested and verified to filter five trace pharmaceuticals, including ibuprofen, progesterone and others. For best filtration results filter cartridge should be replaced every six months or 300 gallons. Reduces chlorine taste and odor, cysts, lead, asbestos and other contaminants. Compatible with select GE french door refrigerators. NSF