These class 1 division 2 Hazardous location Indatech HRT fixtures come in 4ft 2 lamp Stainless Steel and Aluminum versions. They meet Class 1 Division 2 lighting requirements. The HRT-SS Stainless Steel Version is for areas that are corrosive. The aluminum HRT is a more economical version that can be used in areas where corrosion is not a big factor. They are commonly used in: petrochemical facilities, waste water facilities, marine facilities, solvent cleaning areas, Food Industry, ect. Comes is T8 and T5 versions. Listed below is pricing for T5HO Fluorescents. Easy access latching system for front entry. Comes with mounting brackets. 120/277 volt.