Upgrade your boat with the Nibo series BOMAR deck hatch, a premium quality accessory designed for superior performance and durability. Crafted with an extruded aluminum frame this hatch boasts a 'P' style hinge for smooth operation and a WHITE POWDER COAT FINISH that resists corrosion and fading. The 9mm UV resistant smoked acrylic lens provides excellent visibility while protecting the interior from harmful rays. With inside and outside opening handles, accessing and securing the hatch is a breeze. Easliy adjustable corrosion resistant engineered composite riser arms allow the hatch to opened to a fixed position up to 90 degrees. The EDPM Bomar hatch gasket provides a exceptional water proof seal that meets CE requirements for many applications. Powder coated WHITE, Smoked 9mm acrylic lense.Dimension: Hatch opening: 17 3/8″ x 12 1/4″(441 mm x 311 mm) Cut out dimensions: ,18 1/2″ x 13 3/8″(470 mm x 340 mm)Outside Dimensions of Lid:21 3/16″ x 16 1/16″(538 mm x 408 mm)