Mr. Heater certified vent free heaters are your perfect supplemental heating solution. This blue flame 30,000 BTU propane heater comes equipped with on-board thermostat for superior temperature control. with battery powered electronic ignition and mounting feet and hardware included, starting and installing the unit is a breeze (battery included). Mr. Heater vent free heaters can be permanently mounted to the wall or secrurely fastened to the floor with included hardware. Featuring a clean burning blue flame tube, the heater uses natural convection properties to circulate warm, comfortable air. with factory installed Low Oxygen Safety System, you can be confident and comfortable for years to come.