Hand laid molded fiberglass top in wind deflecting design with annodized aluminum reinforcing grid. Fiberglass white exterior, with gel coated interior. Choice of two hardtop sizes; 54β x 70β and 63β x 84β. Owners of boats in the 17β to 21β range will likely prefer the 54β x 70β top, although with a larger boat, the 54β x 70β will provide plenty of coverage and minimum interference. The 63β x 84β has been installed on boats to 34β with 9β beam. This top is nearly 37 sq. feet and provides plenty of coverage for larger boats.