Lithonia Lighting IB632VH High Bay Industrial Hanging Fluorescent 6-Light Fixture, Grey High performance reflector provides 95% Total reflectance for maximum light output Energy efficient T8 fluorescent technology High ballast factor multi-volt (120 - 277-Volt) electronic ballast starts reliably down to 0F Quick Disconnect included For use with six 32-Watt T8 fluorescent bulbs (not included)