This TKO 3 inch hub/inside 4 inch, flush to floor PVC total knockout closet flange offers easier installation, and there's no need to hold knockout while hammering.
    
    - 3 inch hub or 4 inch inside connection
 - 3 inch hub or 4 inch inside connection
 - Knockout will not break apart / cannot fall down drain pipe
 - Holds five floors (22 PSI) for head test
 - Easier installation, no need to hold knockout while hammering
 
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