What is a Remodeling Box?
Most electrical boxes in your home are nailed to the wall studs or ceiling joists before the drywall is hung. But what do you do if you want to mount a box in a finished wall? Or in a place where no stud or joist is located? Use a remodeling, or “old work,” box.
Remodeling boxes can be metal or plastic. Most mount to the drywall using some sort of mechanism that pinches the box between the flanges on the front and ears that flip down or expand on the back.
One of the most common mistakes made in mounting a remodeling box is cutting the hole too large; an oversized hole doesn’t give the flanges or ears anything to “pinch” against.