1000 A Series Anodized heavy-duty aluminum frames No sharp corners to snag lines or sails Spare parts available Heavy-duty acrylic lens Quick acting, adjustable tie down dogs CE approval available Heavy-duty hinges Molded trim ring, sewn screen available on select sizes Locked vent position SS riser arm rod A Series features an external hinge (please allow 1/2" clearance) Outer Diameter radius is 2 7/8" on all square & rectangular hatches Cut out radius is 1-11/16" on all square & rectangular hatches Lens: 1/4" Black Acrylic Hatch Opening: 17 3/8" x 12 1/4" Hole Cut Out: 18 1/2" x 13 3/8" Outer Diameter of Deck Flange: 20 1/8" x 15" Outer Diameter of Lid: 20 1/8" x 15-13/16" Height Deck To Lid: 15/16"