Carbon Steel GMC Denali License Plate. Our Carbon Stainless-Style license tags have become a very popular line in our extensive plate selection. The background is black opaque on #304 Grade Stainless Steel, using an electrostatic painting process. Weighing 1 pound, measuring about 12 x 6 inches and approximately 1 millimeter thick giving it a distinct and durable feel. Mirror and/or opaque 1/8 inch Laser-cut high impact acrylic design(s) are adhered to the surface, with genuine 3M adhesives, to create a captivating three-dimensional finish.