Sunlights Galaxy Electronic remote ballast and 25.5"x11"x6" Econowing 95% reflective aluminum Horizontal reflector. Not available with tempered glass lens or 4 inch air cool fittings. UL Listed for HPS only. Sunlight electronic remote ballast features an extruded aluminum housing that will never rust and has excellent heat dispensation qualities. Extremely efficient - 99% power factor and saves energy compared to HID ballast systems. Electronic ballasts will operate eith HPS or Metal Halide lamps and are voltage specific, Choose a 400W 120V-240V, 600W 120V-240V, 1000W 120V, and 1000W 240V lighting system. 3-year full and 2-year prorated rebuild or replace warranty. We recommend that you select a reflector that has a glass lens when operating metal halide lamps.