I have an Animal Plastics T12 (48x24x24). Animal Plastics cages are made from 1/2 inch thick PVC. The cages that you are looking at I believe are only 1/4 or 1/8th inch thick PVC. I use 11 inch flexwatt on one side to provide a hot side, but I also have a 11x40 inch IR heat panel on the top the heat panel is regulated by my herpstat 4 to control the ambient air temp in the cage. this way the entire cage stays at 80 and the flexwatt provides a hotspot of 92