Fuel Type Natural Gas, Propane, Heating Capacity Input 50,000 BtuH, Radiant Tube Length 13 ft, Floor Coverage @ Minimum Mounting Height 16 ft x 10 ft, Heating Method Radiant, Overall Height 11 3/4 in, Overall Width 18 1/4 in, Overall Depth 9 ft, Element Type Hot Surface Igniter, Thermostat Included Unit-Mounted, Amperage 4.8 A, Heater Voltage 120 V, Heat Output 50,000 BtuH, Frequency 60 Hz, Gas Connection Size 1/2 in, Gas Connection Type NPT, For Use Indoors/Outdoors Outdoor Only