I don't mount mine in the garage, I've seen some who do.
I'd be inclined to build a box around the entire setup using 2x4 or 2x6, and then using a sheet of plexglass that I'd "hook" and latch over the top. this would allow it to be visible for demos, for observing status LEDs, etc. When I'd work on it, I'd lift away the plexiglass cover.