OMNIFilter TO8-SS2-S06 TO8-R-05 Heavy Duty Cartridge TO8, Single Unit N/A Imported Heavy-duty whole house granular carbon replacement cartridge Radial flow design allows for high flow with excellent chlorine reduction Reduces sediment, sand, dirt, rust particles to 25 microns along with chlorine and other tastes and odors Can be used on chlorinated or non-chlorinated water Fits OMNI Filter BF6, BF7, BF9C, BF35, BF36, BF36C filter housings along with other major brands like 3M, American Plumber, Aqua Pure, Culligan, Cuno, GE, Pentek, Watts, Whirlpool and others