I plan on putting a group of 12 holes in a small cross on either side of the enclosure and then in the divider as well. But on the sides of the enclosure i'm thinking of mounting a fan on each side that will eventually maybe be on a timer of some sort. The top will have a hole cut out on either side and I'll be using Aluminum screening, with bolts and steel "L's" for the corners for extra strength. I couldn't find what i wanted for around the whole edge of the opening for the screen, but beggars can't be choosers. Doors on the front, obviously, I just have to cut the hinges at work on the band saw (found out cutting acrylic hinges with a miter saw doesn't do so well... I'm lucky i didn't end up with anything embedded into my face.