The EPL-LM-36-4-MH 4000 Watt Hazardous Location Light Tower from Larson Electronics is a 36 foot extendable light tower equipped with four Class 1 Division 2 metal halide light fixtures producing 110 000 lumens each. The four 1 000 watt metal halide lamps produce a combined 440 000 lumens of light allowing this unit to effectively cover large work areas with high quality illumination. This two section light boom can be extended to 36 feet for maximum area coverage and collapsed to 16 feet when not in use. The mast is elevated using an included 1 000 lbs hand winch with 1/4 inch cable and is extended to its full height using a second 1 000 lbs winch. These light towers are typically mounted to trailers or other stable surfaces via a 12 inch square 1/2 inch thick mounting base-plate which has been drilled to accept four mounting bolts (3/4 inch). The housings on these lamps are constructed of copper free cast aluminum and are coated with an architectural bronze Polyester finish. The lens is formed of thermal shock and impact resistant glass and sealed to the housing with a heavy duty high temperature long life silicone rubber gasket. The lamps socket is a specification grade mogul base porcelain unit with a heavy gauge brass nickel-plated double lamp-grip screw shell and spring-loaded center contact. The ballast is contained within the lamp housing and wiring is routed through a 3/4-in. NPT threaded conduit opening.