Portable Gas Torpedo Heater, Fuel Type Propane, Heating Capacity Output 300,000 BtuH, Heating Area 7,000 sq ft, Minimum Cylinder Size 500 lb, Ignition Type Interrupted Spark, Ignition Power Source Electric, Thermostat Included Unit-Mounted, Overall Height 18 1/2 in, Overall Width 12 5/8 in, Overall Depth 33 11/16 in, Automatic Safety Shut-Off Included Yes, Built-In Air Pressure Gauge Included Yes, Digital Temperature Readout Included Yes, Flame-Out Sensor Included No, LED Diagnostics Included No