Prusa i3 PSU Cover + Switch

I am upgrading one of my Prusa Mendel printers to use a wooden variant of the Prusa i3 frame.
I wanted to mount a 12V 30A PSU to the right-side brace. I used the convenient 4mm mounts on the bottom of the PSU to do so. See photo.
However, I also wanted to make a PSU terminal cover and switch mount that was easier to print and used less plastic (well, sort of). Additionally, since the PSU was mounted flush, I needed a flush mounted cover so that I wouldn't need to use/make spacers.
Thus, I