Open lamp, one-light or two-light rack aisle lighting luminaire. Quarter turn rotary locking sockets. Row mountable. Suitable for damp locations. Customization available upon request. 20 ga. Cold rolled steel housing. End plates are fastened to housing by sheet metal screws. White aluminum reflector standard, 90% reflectance. Universal voltage 120V through 277V (347V / 480V available). Emergency battery pack available.