Penn-Plax Heat Mat - 8 x 8 inch - 8 watt Reptology Heat Mat for Reptiles - Medium Penn Plax The Reptology Life Science Habitat Heat Mat simulates your herp's natural source of heat by heating the substrate in their habitat. This Habitat Heat Mat provides evensafe heat distribution. Constructed of quality materialsthis heat mat is designed and recommended for installation on glass habitats only. Use externally on either the bottom or side walls of the habitat. Rubber spacers include