Stanley Diamond Plate Sheet, 0.1 ga Thickness, 24 in Width, 12 in Length, Polished Aluminum. 12X24 Br Alum Treed Plate. Aluminum Is Light Weight, Yet Strong, Withstanding Heavy Pressure And Loads. Aluminum Can Be Bent Or Formed Into A Multitude Of Shapes. This general purpose sheet is designed for commercial, industrial, and residential applications. Product can be bent to shape for a variety of uses.100 gauge. Made of polished aluminum. 12'' x 24''. National catalog model No. 4221BC.