I agree with Scaled, a screen enclosure for the geckos would be an easy as well as cheap too make.
However your bearded dragons will need something more resistant to claws. Melamine would be a good choice, it holds heat well, relativly inexpensive and easy to work with, and it is resistant to "small" lizards claws.
I purchase my melamine from a cabinent supplier as it is usually better quality than the sheets at Home Depot, Menards, or Lowes. However the pre-cut shelving is often pretty good quality so I would not rule it out.
The trick with the full sheets is moving cutting and using the sheet. A 4x8 sheet of melamine weights a great deal significantly more than a sheet of Gypsum board or 3/4 ply. You will need a second person and a vehicle capable of moving it. I do it by myself but I am stupid!
Also another problem with the 24" wide cage with sliding fronts is the opening will be small really small, less than 12". Also a Adult bearded dragon does btter in a 4'x2' enclosure. Mine are 4'L x 2'W x 2'H large enught to provid one Adult ample romp room as well as a trio during breeding.
Also are you looking for enclosure to breed or display these animals?
A lot of Crested keepers have moved there stock into a rack setup, in fact I have a rack custom built for my crested geckos. Granted I havn't bought them yet but summer is drawing closer. Just a thought.
Good Luck
Jeremy

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"I am become death, the destroyer of worlds" July 16, 1945 Robert Oppenheimer
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