Sea Dog Hatch, Triple Latch, Rectangular, Black. The Triple Latch Marine Deck Hatch features 3 locking points which, when engaged, cause the camming surface to pull the lid into the gasket creating a water tight seal. Features a structural honeycomb lid for superior rigidity and strength. Non-slip textured surface. Can be mounted horizontally or vertically. Full length piano hinge for added strength and security. Interior opening is 11-1/8" X 7" and will accept group 24 series size batteries. Installs with ten #10 FH fasteners (not included). Proudly constructed in the USA of injection molded polypropylene. Overall measurments: 10-1/4" X 14"