This Round Electrical Box Cuts Its Own Hole

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Have a question about Carlon 1-Gang 18 cu. in. PVC Round Old Work Electrical Box? - Pg 1 - The Home Depot

Just insert the target in the receptacle before hanging drywall. When you're ready to cut the hole, hold the Blind Mark Locator magnet over the area where you think the receptacle is located. When it finds the receptacle, the magnets will snap precisely into place where the receptacle is located.

Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool

The Carlon Super Blue New Work Round 14.5 cu. in. Non-Metallic Hard-Shell Ceiling Box is designed to not break or crack, even in extreme conditions.

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Existing opening is too large for my cut-in box.. Any ideas on how best to support the box? : r/electrical

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