Brand new Genuine Whirlpool WHA4BF5 Large Capacity Carbon Whole House Filter Cartridge. Reduces sediment, chlorine taste and odor, sand, silt and rust Carbon block filter provides better tasting water throughout your home 25 Micron filter – the lower the micron rating the more particles or contaminants removed by a whole house filter Universal fit - guaranteed to fit all major brands of large capacity size whole home water filtration systems including Whirlpool, Omni, Culligan, Watts, Filtrete, 3M, GE, and DuPont Tested and certified NSF ANSI 42 for material requirements Fits industry standard 10 inch x 4-1/2 inch filter housings including WHKF-DWHBB