Thats where i got my plans for my racks. From clay's site. I built mine pretty much the same as his. Only the last few i made a little frame on the bottom and added wheels to them. Works great. If you do decide to do something like that. Make sure you get at least 1/8 in. space between the tub and the heat tape. Another thing is make sure you get your frames that the pegboard go on the right size. If to big then you will have to come up with some kind of spacers for the rails that the tubs slide on. If to small there will be all kinds of gaps and snakes will get out,and the tubs will stick real bad. Another thing i changed was i added a 1x2 down the center of the back. For a stopper for the tubs. Holds temps and humidity great. Also never had any snakes get out. The first one i made was 8 tubs high. All the ones after that i went to 7 tubs. Here is a pic of the first one i made. Seams like the more i build the better they get. This one isnt the squarest thing ever built but it works.