884-ATM Sioux Chief TKO Total Knockout Closet Flange - 3" hub/inside 4" flush to floor
- Ten years of proven performance
- Knockout will not break apart and cannot fall down drain pipe
- Strong, corrosion-resistant stainless steel ring eliminates cracked flanges
- Easier installation, no need to hold knockout while hammering
- Holds five floors (22 PSI) for head test