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Can anyone tell whether this is a drain cover or an electrical outlet cover? Former homeowners converted a garage to a family room ~20 years ago including extensive water drainage reorientation. The room appears to have been carpeted at one time. Photo shows a 5+11/16" circular brittle plastic cover with a 4" capsule-shaped recess holding two metal screws (rusted and stripped) on either side of a large 4-sided phillips-shaped indentation (shallow, stripped). Original color (grey? or white) obscured by cement treatment. It rises 3/8" above cement floor level. enter image description here If it's an outlet, we want to use it; whereas, if it's a drain, we want to leave it alone.

  • This is in a concrete floor? Are there other outlets in the floor? I'd lean towards plumbing, since it's in the floor. Though without more knowledge of the location, it's difficult to say for sure. – Tester101 Jan 14 '16 at 18:17
  • Looks a lot like a blank version of this type of cover – JPhi1618 Jan 14 '16 at 18:45
  • I've seen recessed electrical outlets that are brass plate covered and have a hinged door in concrete floors similar to this one, but the two striped screws function are unfamiliar. – ojait Jan 14 '16 at 19:14
  • Let is know what it is when/if you open it up! – JPhi1618 Jan 14 '16 at 19:16
  • Im no plumber but in addition to the other clues to it being an outlet, a drain should be flush with the ground, not above it by half an inch. – n00b Jan 14 '16 at 23:19
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My bet would be on it being a receptacle. Typically floor boxes like this are installed raised up a little, so as to accommodate carpet or other flooring.

Outlet cover

I would also bet on it being a single outlet. Most likely the center cap is covering the outlet and the outer screws are there to hold everything on. Since we can see a shadow from the center box, I'd say pry it off of there as best you can.

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It's hard to say, but looks like an outlet to me. It should be safe to use an appropriately sized philips driver to open the plug in the middle and look inside. (It looks large. Don't strip it with a small driver.)

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It's an electrical outlet cover. We had them at one of my previous places of employment. We actually had two separate sets of them offset by a few feet under the floor of office space. The second set was for our computer networks. The center plug is to keep debris out of any outlets not in use.

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