HeatStar's Heavy Duty Portable Indirect Fired Forced Air Heater F151092 provides indirect, temporary heat to various industrial / commercial workplaces. This liquid propane / natural gas heater features flame / overheat safety shut-off for added security, a durable powder coated finish and is rugged, convenient and ready to use. The F151089 has heavy duty 10" pneumatic tires / wheels for fast and easily portability. Automatic safety / control devices, long life stainless steel combustion chamber, electronic flame control and water resistant flame control box are also included. The F151092 is CSA Certified.