Mr Heater Blue Flame 20000 BTU Natural Gas Vent Free heater. Blue Flame 20,000 BTU Natural Gas Vent Free heater 20,000 BTU per hour For use with Natural Gas Heats up to 500 sq.
Not for use in bathrooms, bedrooms, or recreational vehicles. 4,500ft high altitude restriction. Propane cylinder must remain outdoors. Use Supplemental heat in cold rooms, Additions, Sun rooms, Cabins Thermostat - Yes Safety Tip-Over Switch - No Fuel Type Natural Gas Heat Type Blue Flame Oxygen Depletion Sensor (ODS) - Yes High Limit Safety Shut-off (HLS) - Yes Indoor Safe - Yes Ignition Electronic Hose & Regulator Included - No.Every product is packaged carefully for safe travel.