3M Aqua-Pure AP124 Whole House Filter

The AP124 by 3M Aqua-Pure water filter replacement cartridge reduces dirt and rust up to 50 microns. The 3M Aqua-Pure AP124 dirt & rust water filter cartridge is made from an exclusive process using pure white cellulose fibers. As water passes from the outer surfaces into the center of the cartridge, the filtering pores become increasingly smaller to remove even microscopic particles. Unlike string-wound and pleated paper cartridges, the rigid, sturdy construction of the 3M Aqua-Pure cartridges are able to withstand high pressure drop and stressful conditions such as water hammer.