Fluorescent High Bay Fixture, Lamp Quantity 4, Lamp Type T8, Suggested Lamp Item No. 2ETU3, Fixture Wattage 146W, Voltage 120 to 277VAC, Description/Special Features Uplight, Length 48-1/16 In., Width 13-1/4 In., Height 2-3/8 In., Light Distribution Narrow, Reflector Type Miro4(TM), Reflector Material Aluminum, Mounting Height 15 to 40 ft., Space to Mtg. Height Ratio 1, Lamp Watts 28W, Ballast Type Electronic Instant Start, Ballast Quantity 2