Heavy Duty Filter Cartridge. Taste Odor And Sediment Cartridge. Heavy duty filter cartridge, for use with well and chlorinated water. Reduces Rust and Sediment. Pleated paper construction with carbon wrapped inner core. Fits OMNIFilter BF7, BF9C and BF35 whole house systems. Product Dimensions: 4.5 x 4.5 x 9.9 inches , 1.2 pounds. Reduces Rust and Sediment. Pleated paper construction with carbon wrapped inner core.