For over 60 years the Master Heat Gun could be found in use in some of the most demanding industrial and commercial environments throughout North America. The most durable, long-lasting heat gun of its kind, the new Master D Series industrial heat guns are a part of an extensive history of high end, heavy duty, professional heat guns engineered and assembled by the Master Heat Tool experts at their Wisconsin, USA headquarters. The die cast aluminum housing D-Series HG heat gun exceeds industry standards for performance, reliability and reparability.