This high-output 355,000 BTU portable heater delivers powerful heating for large temporary structures and outdoor events. Featuring dual fuel capability that allows operation with either vapor or liquid propane, this versatile unit provides maximum flexibility for various job sites. With 82% fuel efficiency and thermostat control, it optimizes fuel consumption while maintaining consistent temperatures. The robust design includes a powder-coated steel cabinet and stainless steel burner assembly for exceptional durability in demanding environments. CSA certified for safety, this heater includes multiple protection systems including flame monitoring and high-temperature limit switches.