The BRICK® has multiple certifications: Portable, Explosion Proof, Low Voltage, and Suitable for Wet Location use. As explosion proof, The BRICK® is certified as safe to use in Class I Div 1 OSHA certified Hazardous Locations. These locations that are classified are depending on the properties of the flammable vapors, liquids or gases, or combustible dusts or fibers that may be present and the likelihood that a flammable or combustible concentration or quantity is present. Hazardous (classified) locations may be found in places such as, but not limited to petroleum and chemical processing plants. Each room, section or area shall be considered individually in determining its classification.