Sioux Chief 3 In. Hub/Inside 4 In. Schedule 40 DWV PVC Closet Flange

Total knockout, flush to floor, closet flange will not break apart and cannot fall down drain pipe. Easier installation, no need to hold knockout while hammering. Holds 5 floor (22 P.S.I.) for head test. The inside diameter of pipe can vary significantly. These flanges are designed to fit inside most, but may not fit all types of pipe.