The 818 design sits flat and shows straighter edges, measuring at 2 3/8" wide and 7/8' high with a center cut out. It is a perfect match with the 284GP with the center cut. Spoiler is made from high quality polyurethane material and sits flush against the edge of the windshield. It includes self adhesive tape for easy installation. Spoiler is UNPAINTED with a flat black finish. Painting will require flex paint to be used. All spoilers are aftermarket and manufactured in the USA.