This TKO 3 in. hub/inside 4 in., flush to floor
- Closet Flange
- 3 in. hub or 4 in. inside connection
- Knockout will not break apart / cannot fall down drain pipe
- Strong, corrosion-resistant stainless steel ring eliminates cracked flanges
- Holds five floors (22 PSI) for head test
- Easier installation, no need to hold knockout while hammering
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