Dyna-Glo Deluxe portable multi-fuel forced air heaters provide immediate relief from cold weather working conditions. Ideal for residential industrial and commercial applications multi-fuel heaters require little to no assembly and are 98% fuel efficient. This multi-fuel forced air heaters operates on 1 K kerosene # 1 diesel and # 1 fuel oil. Heating coverage areas up to 5200 square feet. Two heat setting at 180K BTUs and 220K BTUs for two heaters in one. Patent pending variable heat controls self diagnostics thermostat LED readout and cord wrap features included. Dual Heat Technology Comfort Control Thermostat Built-in Digital Diagnostics Built-in Air Pressure Gauge Run Time Fuel Gauge Secondary Power Outlet 10" Flat-free Wheels Front & Rear Lift Handles & Cord Wrap Flameout Sensor Sturdy Rugged Construction.