CLEARLY GREAT WATER: This whole house water filter reduces sediment from well water. EASY TO REPLACE: Sanitary Quick Change (SQC) cartridge design helps provide fast and easy cartridge change-outs of the 3M Aqua-Pure Whole House Replacement Water Filter Cartridge AP910R with minimal effort. FLOW RATE: 1 inlet and outlet connections to help a plumbing professional with easy installation and peak flow rates up to 20 gpm to meet the water pressure demands of most homes. CORROSION RESISTANT: 304 stainless steel head can be installed on existing copper pipes in the home. It consists of a corrosion resistant material that provides long service life. NSF STANDARD 42 CERTIFIED: Tested by one of the world’s most respected independent certification organizations that helps protect the world’s food, water, consumer product and environment. IDEAL FOR larger homes and is effective with both chlorinated (municipal) and non-chlorinated (well water) systems.