Big heat right out of the box! This MR. Heater Convection Heater packs a big punch in a small package. It utilizes the natural act of warm air rising to quickly heat up to 5,000 square feet. It is equipped with a thermo-electric safety valve to shut the gas flow off if the flame ever goes out. Just hook-up the supplied propane hose and regulator assembly to a 100 lb. propane tank, then easily light the heater utilizing the factory installed Piezo igniter and enjoy the comforts of a toasty warm jobsite.