Material, 6061&t6 aluminum alloy, 0.930 inch thick per qq&a&250&11. Dimensions, length, 6.000 inches, width, 4.630 inches. Finish, chemical film alodine 1200 per mil&c&5541 class 1a, black coating fed&std&595, color no. 37038 per mil&c&2270, class 2, type three