The TPI Corporation A5120 mounting bracket is for use with 5100 series fan forced electric heaters that are in model sizes from 7.5 to 20kW to mount the heater from a wall or ceiling. The bracket is made of steel and has an L shape that holds the heater unit away from the mounted surface for air circulation and fire safety.Electric heaters generate warmth through a central heating element that is housed in a reflective enclosure that concentrates the energy produced. An element made of a combination of metals produces heat or infrared energy by the electrical resistance created when an electric current passes through it. Fan-forced heaters pass air over the heating element to expel heat from the enclosure for greater throw and circulation. Radiant heaters do not use a fan, but warm nearby objects through energy transfer. A heater’s voltage and wiring should be matched to the electrical circuit where it is to be used. Heaters are used in a range of commercial applications that include shop floors, construction sites, and industrial buildings. All local electrical codes should be followed when installing permanent mounted electric heating equipment.TPI Corporation manufactures industrial and commercial electrical heaters, process heat ovens, ventilation products and fans, lighting equipment, and thermostatic controls. The company, founded in 1950, is headquartered in Johnson City, TN.