its actually an old rack, about 15 years old. i bought it from a company called matrix, i believe. its a standard melamine rack with heat tape running along the back of each shelf. Im gonna make a new one when i get a chance. im still undecided on what materials to use. im thinking either melamine or mdf with contact paper for moisture protection. But i wrapped some blankets around the rack and and my chondro cages as well and it seems to have helped. thanks for the replies