Tradesman 400 Ultra DF | 250,000 - 400,000 BTU/Hr | LP/NG | w/ Diagnostic Light

The L.B. White Tradesman® 400 Ultra DF delivers massive heating power with 400,000 BTU/hr of high-efficiency, direct-fired heat using either liquid propane (LP) or natural gas (NG). Built for large-scale commercial and industrial applications, this dual-fuel heater offers maximum flexibility, rugged steel construction, and 99% fuel efficiency. With an enclosed flame, integrated thermostat, and heavy-duty portability, the Tradesman 400 Ultra DF is the ultimate solution for heating warehouses, construction sites, and other demanding environments.