Avenger FDT20BF Dual Fuel Vent Free Blue Flame Heater, Thermostat, 20,000 BTU Product dimensions: 25.7" h x 18.46" w x 9.84" d Patented dual fuel technology: Natural gas or liquid propane Thermostat control - automatically cycles the burner to maintain a desired room temperature 5 heat settings with micro heat adjustments between each setting Please note: This item is not for sale to residents in California due to local regulation restriction