OPTIMUM LIGHTING G16P 632 UV 2PSH E C6 OS 4' 6 lamp T8 Open High Bay constructed of Prepainted Steel with Wide Light Distribution; 2 - GE 332 MV PSH, 1.15BF, 120-277V Program Start Ballasts (or Equal); Enhanced Specular Reflector; 6' Cord; Offset Bracket with High Bay Occupancy Sensor