Feature: 1. High Durability: Made of heavy duty aluminum alloy, the anodized, polished surface offers a good matte touch, and guarantees corrosion resistance and durability, robust enough to resist the harshest marine environments. 2. Smoke Tinted Tempered Glass: Features 6mm thick smoke tinted tempered glass, the tinted color can filter out UV rays while letting in light, thereby improving cabin brightness, can also serve as a ventilation window. 3. Waterproof and Shockproof Design: The frame of the deck hatch is equipped with a waterproof sealing ring, offering perfect sealing waterproof and shockproof performance when the window is closed. 4. 316 Stainless Steel Support: The supports and hinges constructed of 316 stainless steel, ensuring overall corrosion resistance and durability, the push out opening design allows for any angle opening from 0‑90 degrees. 5. Versatile Fit and Application: Measuring an exterior size of 21x27 inches and requiring an installation hole size of 18.4x24.4 inches, ideal for boat, yacht, ship, and RV, can be used as a skylight, escape window, storage, roof and more. Specification: Item Type: Square Deck Hatch Switch Type: Outward Push, with Stainless Steel Support Rod and Locking Handle Max. Opening Angle: 90 degrees Window Size: Approx.525x675mm/21x27in Installation Opening Size: 460x610mmxR45 / 18.4x24.4inxR45 Installation Thickness: 25-50mm/1-2in Fitment:Fits for Boat, Yacht, Nautical, RV. Package List: 1 x Square Deck Hatch Note: 1. It is difficult to install, it is recommended to find a professional engineer to assist in the installation to get the best shopping experience, 2. We will provide high hardness and all round protection of the package, the goods are delivered to your hands is a new and undamaged turn, please pay attention to avoid collision when disassembling and assembling 3. Please measure the size before buying to make sure it is what you need