Hopefully this is a newbie question and easily answered, or if not then I've scr3wed up :-)
I have low voltage electric wall boxes for network and speaker cables mounted behind drywall, the distance between mounting screws is 2.375". Most are single-gang, but I also have two-gang and three-gang boxes.
For the two-gang and three-gang wall boxes I've only been able to find faceplaces with 3.281" between mounting screws, they take 'Decora' inserts for network or speaker cables. I haven't found faceplates for two- or three-gang wall boxes with 2.375" between screws. So I need to find a way to mount 'big' faceplates on 'small' mounting boxes.
I've found mounting bridges on the web but they seem to be for mounting 'small' devices inside 'big' wall boxes, i.e. approximately the opposite of what I'm trying to do.
Can anyone suggest how I can a solution for mounting 3.281" faceplates on 2.375" boxes? Replacing the boxes is not an option as the walls are finished. If I cannot buy something then I'll need to fabricate an adapter myself, but that's going to be laborious I'm pretty sure this problem has been solved before!
Can you post an image or a link? It's unusual for a switch box to not have a plate available.
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