Six Lamp Hooded Industrial, 91% White Shades, 277 Volt High Power Electronic Ballast •Great one for one replacement for 400 watt metal halide fixtures. •Good alternative to 4 lamp T5 H.O. fixtures: 10 watts less draw, only slightly less footcandles & considerably less expensive fixture and lamps. •Use 95% specular reflectors above 18 feet mounting height. •Also available with 120 volt ballast.