Heater F299741 Vent-Free 30,000 BTU Natural Gas Garage Heater - Black. This Black Radiant 30000 BTU Natural Gas 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 Multiple burner tiles utilize radiant heat warming your space with the power of the sun With a factory standard Oxygen Depletion Sensor ODS rest assured this heater will provide you with years of comfortable and safe heatFeatures. Blue flame burner for even convection heat.Heats up to 1000 square feet. Automatic low oxygen shutoff system. Thermostat for automatic temperature control. Quiet integrated blower for gentle circulation of heated air. Low Oxygen Shutoff Switch Yes. Blue flame burner for even, convection heat.