Metal Halide Lamp, 65, 4000 K, 100280 LM (Horizontal);108000 LM (Vertical) Brightness (Lumens), 1000 W, Clear, Hard Glass Material, 11000 H (Horizontal);15000 H (Vertical) Average Life, Mogul Base, M47 Ansi Ballast Code, Non Dimmable, 7 In Diameter, 15.37 In Height, 150 % Mercury Content, 8.01 LB