The MXD-300 is a ductable waste oil heating unit that pumps out 300,000 BTU to heat even the largest shops. This unit was designed to meet the demand for a unit containing MXD-200 ductable features with the powerful heating capability of our 300,000 BTU MX-300 heater. All of the Lanair heaters are proudly made in the U.S. and feature a heavy-duty steel structure with a galvanized cabinet for a rust-free, durable and quiet performance. All automotive, fleet and equipment repair garages have an untapped source of free fuel in the used oil they generate. Burning used oil in a Lanair heater is E.P.A. approved and will reduce your used oil disposal costs and liability.