This heater will generate up to 18,000 BTU of gentle, effective heat, Because it is almost 100% efficient, it requires no chimney or outside venting, The unit will run without electricity so it is very useful during power outages, Features include manual temperature controls, reliable top-mounted Piezo ignition system, an oxygen depletion system, and flame failure safety features, This heater can be used on the floor (with the included stand) or mounted on a wall, When permitted by state and local codes, this unit can be used in mobile homes, 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, Manual 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: SNSTRHP012