Portable Gas Torpedo Heater Fuel Type Propane Heating Capacity Output 150 000 BtuH Heating Area 3 800 sq ft Minimum Cylinder Size 100 lb Ignition Type Continuous Spark Ignition Power Source Electric Thermostat Included No Overall Height 15 in Overall Width 9 in Overall Depth 25 in Automatic Safety Shut-Off Included Yes Built-In Air Pressure Gauge Included No Digital Temperature Readout Included No Flame-Out Sensor Included Yes LED Diagnostics Included No