The HB-5000-44 Series new Highbay is equipped with a 95% reflection vega-95 aluminum reflector which creates a high efficiency light source. The use of a universal voltage electronic ballast makes this ideal for commercial and industrial use. The premium design of this fixture makes the housing stronger and allows for better performance. RTG Lighting HB-5000-44 Series comes in both T5 and T8 options for both 4, 6 & 8 lamps.