| 摘要 |
A closet flange includes a body having a lower body portion containing a bore and an upper body portion containing an inlet opening in fluid communication with the bore. Within the body is a knockout for closing off t he bore. The knockout has a frangible connection with an interior wall of the body and one or more portions that extend radially outwardly into a portion of th e inlet opening that has a larger diameter than the bore to permit the knockout to b e broken out of the body while preventing the knockout from passing all the wa y through the bore.
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