The GH-100 is a duct-type, electrically-powered, ground-portable heater which meets requirements for use in fuel vapor laden atmospheres. Available in two models with different input power specifications, the GH-100 produces a heated pressurized air stream to ventilate and dry fuel cells and other types of fuel containers. It is the only approved USAF HDU-13/M product, relied on by those who work in environments near highly combustible or volatile liquids or vapor gases.