Steel City 53151 1/2 3/4 Pre-Galvanized Steel Square Box Extension Ring with 1/2-Inch and 3/4-Inch Knockouts
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<b>[Product Information]</b><br>
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<li>Drawn construction</li>
<li>Used when you need to add extra wire capacity</li>
<li>Mounts directly on top of the square box</li>
<li>Allows you to add circuits</li>
<li>UL listed</li>
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