120,000 - 170,000 BTU/Hr. 450 CFM Output Heating Area 4,000 sq. ft. Fuel Type - Liquid Propane Minimum Tank Size - 100 lbs. Solid State Spark Ignition Running time 10.5 hrs. high, 17 hrs. low (approx.) Weight 30.35 lbs. ETL Certified 1 Year Limited Warranty Patented Quiet Burner Technology reduces the combustion and operation noise by up to 50% Equipped with a 25°F-95°F thermostat. The heating element cycles on and off to maintain the set temperature. Rugged two-piece split barrel, designed to make cleaning and maintenance easier and safer. Continuous electronic ignition is always present as a source of ignition for unburned fuel, reducing the ability for fuels to pool and collect in a dangerous manner. Recessed controls designed to reduce the risk of damage on the jobsite.