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2 -Gang Metal Weatherproof New work Box extender Electrical Box

Sigma Engineered Solutions 2 -Gang Metal Weatherproof New work Box extender Electrical Box

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How is this metal extender supposed to be grounded?


The extension ring does not have a ground screw because it is not required by UL. The outlet box that the extension ring is screwed to has a ground screw, and the receptacle, switch or GFCI that is screwed to the extension ring also has a ground screw.

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