2000 Series Anodized heavy-duty aluminum frames Heavy-duty acrylic, lens Extra high sealing lip on base No sharp corners to snag lines or sails Spare parts available CE approval available (please specify when ordering) Heavy-duty hinges Quick acting, adjustable tie down dogs Locked vent position SS riser arm rod Style A-external hinge Hatch Opening: 12 1/4" x 17 3/8" Hole Cut Out: 13-15/16" x 18-7/16" Outer Diameter of Deck Flange: 15" x 20 1/8" Outer Diameter of Lid: 15-5/16" x 20-7/16"