Built this for the restaurant that my brother works at. They bought an LED sign but the only problem is it can’t be placed directly outside, they asked me to build a box to hold it and protect it from the weather. The sides are built out of red oak and the back is built out of 1/2” oak plywood and there is also a piece of lexan in the front. The ply is sits in a rabbet and is held in place by screws driven in from the side, since it will be mounted on a wall. I finished it with a couple coats of Helsmans outdoor finish.