The Thermablaster WDFT100-VF is a 10,000 BTU vent-free propane powered wall-mount heater. A built-in thermostat ensures intelligent heating by maintaining the temperature at the desired level. This heater has an enclosed blue flame for maximum safety while a second stainless steel front panel adds to the high end appeal of the unit. It is great for bedrooms or rooms of 300 square feet or more. User can chose from 5 heat options.