You know, I needed 1 box and didn't want to order a big batch, so I built a 12w x 12h x 6d box out of cheap 7/16 OSB, painted it, sealed it and mounted it on rebar. I put a clear trash bag over it while the paint was drying on the lid, but I ended up leaving the trash bag over it and not putting the lid on because I like to be able to see what the controller is doing when I walk by.