The Raychem EMK-XJB junction box is for particular use in industrial and commercial snow melting applications. It is a large, UL Listed weatherproof enclosure suitable for terminating both ends of an ElectroMelt heating cable circuit. This junction box is large enough for 2 circuits of Raychem ElectroMelt heat trace cables. The enclosure is made of molded structural foam and provides high impact strength, excellent chemical resistance, high dielectric strength, and excellent weathering capabilities.FEATURES:• NEMA ratings: Types 1, 3, 3S, 3X, 3SX, 4, 4X, 12, 13 as indicated• Temperature range is -40°F to 185°F (-40°C to 85°C)• Inside dimensions: 12" x 10" x 6-7/8" (30.5 cm x 25.4 cm x 17.5 cm)• Inside volume: 825 cubic inches (13528 cm3)• Outside dimensions: 15-1/2" x 11-3/4" x 7-5/8" (39.4 cm x 29.85 cm x 19.37 cm)