<p>Natural Gas Vent-Free Blue Flame Wall Heater uses natural convection to circulate warm, comfortable air evenly throughout room, uniformly providing cozy warmth like your home heating system. No venting, chimney or electricity is required, making this heater ideal for power outages. You also get easy temperature control, thanks to the multi-output valve. Convenient electronic piezo ignition offers simple, reliable starting and the automatic low oxygen shutoff system to keep safety. Includes brackets for wall mounting and legs for floor use. </p>