Sunlights Galaxy Electronic remote ballast and 19.75"Lx18"Wx6.25"H Yield Master 6 inch Horizontal reflector. 95% reflective German aluminum interior for maximum light output and uniformity. Comes tempered glass lens and built in air cool fittings. Lamp cord and socket are built into the reflector. UL Listed for HPS and for Metal Halide with tempered glass lens. Extremely efficient - 99% power factor and saves energy compared to HID ballast systems. Electronic ballasts will operate either HPS or Metal Halide lamps and are voltage specific, Choose a 600W 120V-240V or 1000W 120V-240V lighting system. 3-year full and 2-year prorated rebuild or replace warranty.