Hazardous Location Enclosures are used for Hazardous Locations consist of areas where there is the potential for a fire or explosion due to electrical equipment that is in operation in the area with a reaction to flammable or ignitable gases, liquids, vapors, combustible dusts, fibers or flyings. These are engineered for use in hazardous locations including petroleum refineries, chemical plants, storage areas and other processing facilities where hazardous substances are handled or stored.