Emergency Exit Class 1 Div 2 Lights are one of the highest rating of hazardous location lighting available. These rugged lights are certified and tested under UL certification UL844. These lights work in dangerous, hazardous locations where concentrations of flammable explosive vapors, gases, or liquids are sometimes present. If you are unsure what light might work best for you, contact the lighting experts at LED Lighting Supply. We also offer free lighting plans so you can see how well our Emergency Exit Class 1 Div 2 Lights will work for you before you buy.