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I'm about to cover up some junction boxes in my ceiling, they need a cover and I got the wrong size at the store.

I have some metal flashing laying around from working on my roof would this be safe to use if I cut it to size and screw it on?

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    Why can't you just go back to the store? – ThreePhaseEel Jun 10 '17 at 20:12
  • I can, it's just a 45 minute drive from me. – Calvin Jun 10 '17 at 20:16
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    Yeah -- this would be a good time to take advantage of whatever return policy the store provides, too – ThreePhaseEel Jun 10 '17 at 20:20
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    Electrical boxes, enclosures, covers, etc. must be "listed" for the purpose, yes? – Jimmy Fix-it Jun 10 '17 at 21:33
  • Only use metal to cover your junction box if the box is metal too. – Edwin Jun 11 '17 at 2:16
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Don't knock yourself out making a special trip, but do go get correct, listed box covers eventually when you get a chance. Homebrew covers are not legal. Most of the covers I use are on the order of a dollar, so I don't worry too much about keeping a few in stock.

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