Avenger FDT2IR Dual Fuel Vent Free Infrared Heater, Thermostat, Blower included, 20,000 BTU Patented dual fuel technology: Natural gas or liquid propane, blower pre-installed and included Thermostat control  the control automatically cycles the burner on and off to maintain a desired ro Safety assurance: O.D.S. (Oxygen depletion sensor) included with automatic shut-off Product dimensions: 25.7" h x 18.46" w x 9.84" d Please note: This item is not for sale to residents in California, check your local regulations befo