Made of heavy-duty non-corrosive black plastic. Includes adjustable height crossbar and retaining bolts. Meet ABYC Standard E-10 and U.S. Coast Guard requirements. Install with #10 fasteners.
90975/90985: Plastic cross bar and posts.
90965/90955/90945: Stainless steel retaining bolts. Fits 27/27M ID 12" x 6-7/8"