Ideal for heating large areas quickly & efficiently, the Devil 4000 is a propane gas powered heating unit manufactured specifically for spaces such as large workshops, warehouses, industrial units & more. Producing a minimum heat output of 250, 000 BTU (70k W) & a maximum heat output of 400, 000 BTU (117.2k W), the Devil 4000 can be adjusted to suit the requirements of the area it's heating & those around it. Featuring fuel safety cut out feature & approved to British & European standards, the Devil 4000 is the perfect large heater for industrial use.