The Exo Terra Heat Wave Desert Terrarium Substrate Heater simulates the heated sands of the desert regions, The long hours of daylight, combined with the strength of the sun, can generate extremely hot surfaces, The substrate is usually dry, and the air humidity levels are not as high as those found in tropical areas or rainforests, The power of the Exo Terra Heat Wave Desert Terrarium Substrate Heater is balanced to create these conditions in the terrarium as well as providing safe, even heat distribution, Easy to install, the Exo Terra Heat Wave Desert Terrarium Substrate Heater can be mounted under the terrarium, The Exo Terra Heat Wave Desert Terrarium Substrate Heater Features and Benefits:, - Ideal for dry or desert terrariums, - For under tank mounting, - Conductive heat source for reptiles and arachnids, - Helps in thermoregulating - important for metabolism, digestion, appetite and activity, - cUL approved, - Safe, even heat distribution, 11"" length x 10, 5"" width SKU: RCHG1057