Anti-Aging, Ultraviolet Resistant ABS Construction Heavy Duty Lid with Non-Slip Surface Simple Installation and Usage Low-Profile Hatch Size: 24" X 9.5" (607mm X 243mm) Features: Low profile hatch, designed for installation on internal or external flat surface Heavy duty, UV stabilised white ABS construction Reinforced lid with non-skid surface Rubber seal ensures weatherproofing when mounted on vertical surfaces Durable and reliable recessed handles Easy to install with pre-drilled countersunk fastening holes (screws not included) Specifications: Overall size: 24" X 9.5" (607 x 243mm) Opening clearance: 20.66" X 6.6" (525 x 168mm) Protrusion above deck: 0.7" (17mm) Intrusion below deck: 1" (26mm) Mounting screws not included Package Includes: 1 x Marine Deck Access Hatch & Lid (24" x 9.5")