High Intensity Discharge (HID) Lamp, High Pressure Sodium, 750 Watts, ED37 Lamp Shape, ANSI Number S111, Lamp Designation LU750, U Operating Position, Universal Mounting Position, Description/Special Features Clear, Average Life 24K hr., Max. Overall Length 11-1/2 In., 110, 000 Initial Lumens, 2100 Color Temp., 22 CRI, Mogul Base, Open Fixture Type, 110, 000 Mean Lumens, Light Center Length 6-3/4 In., Standards Meets 2012 Lighting Legislation Energy Standards