Optimized for T8 lamps, Equipped with energy-saving ballasts, Superior lens brightness uniformity, Reinforced flat steel door or regressed aluminum door available, Positive spring-loaded steel latches and safety lock T-hinges, 90% reflective white enamel finish for superior performance, Micro ballast cover reduces ballast shadow and has tool-less access, Features full-length, die-formed stiffeners and unibody endplate, Ample knockouts provided for continuous row wiring