This product is a 100% brand new, original Seaflo product low profile hatch, designed for installation on internal or external flat surface heavy duty, UV stabilized white abs construction reinforced lid with non-skid surface the lid hinges 180° and completely covers the mounting flange, for an attractive flush finish rubber seal ensures weatherproofing when mounted on vertical surfaces supplied with 2 strong recessed handles easy to install, pre-drilled countersunk fastening holes (screws not included) specifications overall size: 17-1/4´´x12-2/5´´ 440 x 315mm opening clearance:14"x 9-1/2" 358 x 240mm protrusion above deck: 0.7" 17Mm intrusion below deck: 1" 26mm mounting screws not included. Item number: pre1-315-440-01.