This bracket can be mounted to a wall and has an opening in the front to mount an AIMS REMOTELF Inverter Control Panel to. One of the long sides (the bottom for my location) has a small cutout for the communications cable to pass through.

I didn't use supports to print mine and got some stringing on the cross pieces but since those are covered when it's attached to the wall I wasn't worried about the looks and didn't feel the need to consume extra filament. Adding supports “on build plate only” should take care of that if you want it to be a bit nicer inside though.