Mr. Heater, DXH150FAV, 150,000 BTU DEWALT Forced Air Propane Heater, Heats 3,750 sq ft., Patented Quiet Burner Technology reduces the combustion and operation noise by up to 50 percent, Recessed controls designed to reduce the risk of damage on the job site, 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, Includes a 20 ft hose and regulator, Perfect for well ventilated construction sites, barns, warehouses and workshops.