The Mr. Heater(R) 200, 000 BTU liquid propane convection heater is designed for safe and efficient heat on the jobsite. The 360-degree directional heating covers up to 4, 700 square feet. Equipped with a standing pilot and a thermoelectric safety valve, this heater will run up to 29 hours on its low setting when hooked up to a 100 lb propane tank. Comes fully assembled and ready for use. | Mr. Heater 200K BTU Convection Propane Heater