High Intensity Discharge (HID) Lamp, Metal Halide Lamp Type, 100 Watts, ED17 Lamp Shape, M90 ANSI Number, Lamp Designation MH100/U/M90/E/MED, Mounting Position VBU, Clear, For Use With Enclosed Fixtures, 12K Average Life (Hours), Max. Overall Length 5 7/16 In., 9,000 Initial Lumens, 4200 Color Temp., 65 CRI, Case Quantity 6, E26 Base, 7,200 Mean Lumens, Light Center Length 3.44 In.