Your eyes are wrong LOL. Those are 28 qt's. I actually wanted 32's but had a heck of a time finding any that weren't the buckle top which when you remove the lid leave a sort of cut out area. I just wasn't comfortable with that so went with these 28's that have a straight edge to them (snap on lid type).
The rack is made from pre-cut melamine shelving from Home Depot. The shelving measures about 24 x 48 so the rack isn't huge but it is big and it is heavy. Here's a couple of links....
http://www.ball-pythons.net/forums/s...=688939#688939
http://www.ball-pythons.net/forums/s...=725271#725271
What I loved about Halfdawg's idea was not having to do any exact cuts at home. Just pick up the stuff from Home Depot and off you go, easy as anything. Our Home Depot didn't have any of the 23 3/4 x 48 in stock but they did have the 23 3/4 x 96 shelving so we just had them cut them in half for us (wasn't impressed with a couple of the cuts to be honest so the 48 is the way to go if your store has it). The entire rack from start to finish including installing the flexwatt took about 4 hours.