I made the front out of 1x2 for the frame and the door, I made a frame for the top out of 1x2 also. I then used 1/2" CDX plywood for the sides, back, and bottom. Cut out square windows (holes) in the sides for the screen to go. I left about 2 1/2" to 3" from the edge of the cage to the start of the cut for attaching the screen. The size of the windows that I screened is about 18"x36" on the sides. The door is 36" tall by 20" wide. The total cage size is 24"L24"D48"High. Hope this helps you out. I will try and get pictures.
I plan on making a new cage this winter. When I originally made this cage I put the lights internally, which will be a problem in the future when my Veiled gets full grown, as he will be able to reach the lights. So I plan on taking a similar design and making it with the lights hidden in a panel on the top, but not in the cage. Running the mist system internally so you cant see it, etc.
I will post design pics in my gallerie. The top ten inches is for hiding the lights, so there will be screen across the top of the cage at the 48" mark from the bottom.
Frank