...or "mud ring".
Anyone have a good source for these things? I can't seem to find them anywhere. I found one online source but their order form doesn't work (and it's not clear they'll fit).
The basic problem: I want to attach pegboard to my shop wall. I want to use furring strips to mount the pegboard but I need to add 7/8" (5/8" furring strip + 1/4" pegboard) to the outlet and switch boxes to make them work right.