American Plumber Original WRC25HD20 20 x 4.5 Carbon Heavy Duty Filter
American Plumber WRC25HD20 20 x 4.5 Radial-Flow Carbon Heavy Duty Filter Also fits Pentair, America Plumber, Big Blue, Culligan, 3M/Cuno/Aqua-Pure, Filterite, Keystone Filter, OMNIFilter, Watts and most heavy duty filter housings.