Mr. Heater, MH80CVX, 80,000 BTU Convection Heater, High and low heat settings: 80,000 and 30,000 BTUs, Heats up to 2,000 sq ft., Propane convection heater with cylindrical chamber for 360 degree quick and effective heating, Thermo-electricsafety valve shuts off gas flow if the flame ever goes out, Includes a 10 ft. hose, regulator, and a built-in piezo igniter with no electricity or matches required, Perfect for well ventilated construction sites, barns, warehouses and workshops.