11. CAPTION : Adjustable metal bar can be wedged between joists to properly support an outlet box for a ceiling fan. 12. A : A lot depends on the type of ceiling outlet box that is already installed for your existing ceiling light. 13. Q : I have to cut some rectangular openings for electric outlet boxes in the middle of a sheet of plywood. 14. "But we've also found nests inside hollow doors, in electrical outlet boxes , and inside boxes in the attic, " he said. 15. During remodeling, it's a good idea to inspect the switch and outlet boxes periodically, because dirt and sawdust often collect in them. 16. I have another, smaller hole that also needs to be filled; it is quite a bit smaller than the outlet box hole. 17. When run down a basement wall, to serve a washer and dryer, for example, rigid conduit and well-anchored outlet boxes are required. 18. A : You can buy special surface-mount boxes that serve as extensions to the regular outlet box that is in the wall. 19. To correct the mystery of the indented outlet boxes , relocate them to the proper position, since the wall finish is off anyway. 20. You can then proceed with installing and hanging the fan from the metal outlet box according to the directions supplied with the fan.