The scale inhibition feature in the AP904 whole house filtration system uses polyphosphates in minute quantities to bind calcium and magnesium hardness minerals, preventing them from becoming a solid and building up on metallic surfaces, which can reduce flow rates throughout the home's plumbing system. The stainless steel head assembly with 1 in inlet and outlet connections helps provide high flow rates of up to 20 gallons per minute (gpm) / 75.7 liters per minute (lpm) to meet the needs of most residential applications. Our innovative sanitary quick change (SQC) design allows for fast and easy cartridge change-outs without having to contact the filter media or the need for a filter wrench.

3M™ Aqua-Pure™ Replacement Filter Cartridge, Quick-Change, Series: AP900, 4-1/2 in Outside Dia, 229 in Height, 20 gpm, 40 to 100 deg F, 125 psi Maximum, 5 micron

• Sanitary quick change (SQC) encapsulated media cartridges reduce contact with the filter media during cartridge change outs
• Up to 20 gpm flow rate meets the water pressure demands of most homes
• 304 stainless steel head helps provide sweat in place installation plus corrosion resistance
• System maximum operating pressure of 125 psi (862 kPa) and operating temperature of 100 deg F/37.8 deg C
• 100000 gal capacity