The Exo Terra Heat-Glo Infrared Basking Reptile Spot Lamp features a red infrared heat lamp for all sized reptile terrariums. It provides intense radiant heat without bright light, making it suitable for nighttime use to maintain tropical temperatures. Available in 50 - 150 Wattage options, this bulb aids in thermoregulation and digestion, and is often used for heat-loving reptiles like monitors or tegus that require higher wattage output. It screws into a standard ceramic socket and should be used with a heat-resistant fixture. Available in Multiple Wattage options