Dyna-Glo Delux 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 5,200 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.