This IR3 Series Hazardous location Class 1 Div 2 aluminum fixture is a durable economical solution to your hazardous lighting needs. They are very well made linear style aluminum body fixture with acrylic lens. They come in fluorescent 2 and 3 lamp T5HO and T8 versions. Also available in 2 and 3 strip LED class 1 div 2 lighting. They Meet Class 1 Division 2 lighting requirements for gases and liquids. They are commonly used in: petrochemical, refinery facilities, oil and gas production, chemical plants, waste water facilities, marine facilities, solvent cleaning areas, Food Industry, etc. 120/277 volt. UL and CUL listed.