Heavy duty, low profile hatch, designed for installation on internal or external flat surface Reinforced lid with non-skid surface The lid hinges 180 Degree 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 Specification: Overall size: 17.3" X 12.4" /440mm x 315mm Opening clearance: 14" X 9.5" /358mm x 240mm Protrusion above deck: 0.7" /17mm Intrusion below deck: 1" /26mm SEAFLO manufactures the toughest Access Hatches Use the Anti-Aging, Ultraviolet-Resistant ABS Thermoplastic with robust reinforcement Their rugged design provides performance that you can rely on for years Easy to install, pre-drilled countersunk fastening holes (screws are NOT included)Main Colour: White Package Includes: 1 Piece Deck Access Hatch with Lid Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment