Fuel Type Natural Gas; Propane; Heating Capacity Input 100;000 BtuH; Radiant Tube Length 28 ft; Floor Coverage @ Minimum Mounting Height 26 ft x 12 ft; Heating Method Radiant; Overall Height 11 3/4 in; Overall Width 18 1/4 in; Overall Depth 16 1/4 in; Element Type Hot Surface Igniter; Thermostat Included Unit-Mounted; Amperage 4.8 A; Heater Voltage 120 V; Heat Output 100;000 BtuH; Frequency 60 Hz; Gas Connection Size 1/2 in; Gas Connection Type NPT; For Use Indoors/Outdoors Outdoor Only