New 6" Aluminum Round Deck Hatch.   Features marine grade cast aluminum, anodized finish, neoprene seal, Stainless Steel "T" handle hardware, Textured Non-Skid surface.   Opening Diameter 7-7/8", Cutout Diameter 9-3/4", Deck Flange O.D. 11-3/8", Above Deck Height 1/4", Below Deck Depth 3/4".