This Blue Flame-20,000 BTU Liquid Propane Vent Free heater is the perfect supplemental heating solution even on the coldest days. This heater is conveniently equipped with a thermostat for superior control of the temperature in your space. Also, with a battery powered electronic ignition, starting it is a breeze - battery included. This unit can be permanently mounted to the wall or securely fastened to the floor with included mounting brackets and fasteners. A clean burning blue flame tube…