Portable Gas Torpedo Heater, Fuel Type Propane, Heating Capacity Output 375,000 BtuH, Heating Area 9,300 sq ft, Minimum Cylinder Size 100 lb, Ignition Type Direct Spark, Ignition Power Source Electric, Thermostat Included Unit-Mounted, Overall Height 23 in, Overall Width 13 in, Overall Depth 35 in, Automatic Safety Shut-Off Included Yes, Built-In Air Pressure Gauge Included No, Digital Temperature Readout Included Yes, Flame-Out Sensor Included Yes, LED Diagnostics Included No