They are not RV specific in most case but it might help to look first to see it is not something that fits only in a real shallow boxorsomethingI've not seen! Lots of weird out there! but the GFI? Do you mean to change it to a GFI now? I would assume it worked through another GFi around the galley as a safety item already built in? The bigger problem of using two GFI in a row is if it trips, you never know which one to reset!
Kind of like one parachute is great but two can get you into trouble?
The big thing on GFI wiring is that there is an in and out side and need to be wired the right way for that. Line is the incoming and load is often marked for outgoing.
__________________
Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!