High Pressure Sodium Lamp, 22, 2000 K, 16000 LM Brightness (Lumens), 150 W, 110 V, Clear, Glass Material, 24000 H Average Life, E39 Mogul Screw Base, S55 Ansi Ballast Code, Non Dimmable, 2.95 In Diameter, 7.75 In Length, 14.85 % Mercury Content, 0.36 LB