Changing up part of this enclosure. Since my boards where originally cut for 2x4, I'm going to cut the board in 17inx48in... I'm going to leave the 6 1/2 clearance for the lights so it wont overheat inside. I really didnt want to buy a new piece of plywood so I'm just going to cut it to fit the enclosue area. So the inside of the enclosure is 24inx17inx48in still a decent size cage!