This radiant infrared heater is almost 100% and generates up to 18,000 BTU, Since the heater doesn"t need electricity it will work during power outages, The unit features a top-mounted piezo ignition system and thermostat temperature controls, For safety it is equipped with an oxygen depletion sensor system and flame failure safety features, It can stand on the floor (floor stand included) or be mounted on a wall, This item is suitable for installation in mobile homes when permitted by state and local codes, Natural gas radiant infrared heater, Generates up to 18,000 BTUs of gentle, yet extremely effective heat, Almost 100% efficient, Requires no chimney or outside venting, Runs without electricity - even works during power outages, Convenient thermostat temperature controls, Reliable top-mounted piezo ignition system, Equipped with an oxygen depletion system and and flame failure safety features, Can stand on the floor or be mounted on a wall, Convenient floor stand is included for floor mounting option, Suitable for installation in mobile homes when permitted by state and local codes, Dimensions: 19 3/4 in, W x 25 in, H x 9 1/2 in, D, Minimum Clearances to Combustibles:, Front - 18 in, Top - 36 in, Sides - 13 in, Bottom when wall-mounted - 2 in, SKU: SNSTRHP014