The Liebert H13-0010S is an infrared bulb designed for use in HVAC systems to provide efficient heating solutions in various commercial and industrial settings. With a 1600 watt power rating and operating at 277 volts, this infrared bulb generates infrared radiation that is absorbed by nearby surfaces and heats the area. https://www.partshnc.com/h13-0010s-liebert-277v-1600w-infrared-bulb