High Intensity Discharge (HID) Lamp, High Pressure Sodium Lamp Type, 400 Watts, ED18 Lamp Shape, S51 ANSI Number, Lamp Designation LU400/LM, Mounting Position VBU, Clear, For Use With Enclosed Fixtures, 24K Average Life (Hours), Max. Overall Length 9 3/4 In., 54,000 Initial Lumens, 2000 Color Temp., 20 CRI, Case Quantity 6, E39 Base, 43,200 Mean Lumens, Light Center Length 5.70 In.
