"Provides plenty of heat even during power outages - requires no electricity. Thermostat is included for comfort control. For indoor use. Recommended for buildings with 19ft. to 22ft. ceilings. AGA design certified. U.S.A. Fuel Type Natural gas, Blower Included No, Vent-Free Yes, Thermostat Included Yes, Product Type Radiant heat, Remote Included No, BTU Output 100,000. Efficient Infrared Heat - Directly heats people and objects which in turn heats surrounding air to desired temperature Economical - No electricity required Heats during power outages Quiet, clean, odor-free operation Instant Heat - Includes adjustable thermostat for individually controlled warmth CSA certified Mounting hardware sold separately"