Feature:1. Heavy Duty Aluminum Alloy: The overall frame of the porthole window is made of heavy duty aluminum alloy, ensuring rust resistance and durability even in harsh outdoor environments. The surface is anodized and polished to a smoother finish, providing a textured feel.2. 6mm Tempered Glass: The deck hatch window 6mm thickness tempered glass, ensuring sturdiness and safety. The colored glass filters out UV rays while allowing light to enter the cabin, enhancing brightness and can also be used as a ventilation window.3. Waterproof Sealing: The push out window frame is equipped with waterproof rubber rings, providing complete waterproof sealing and shock absorption when the window is closed.4. Stainless Steel Components: The deck hatch porthole window includes support rods and hinges made of 316 stainless steel, ensuring oxidation resistance and durability. The outward opening design allows for easy angle adjustment and secure support at any angle.5. Easy Installation: Suitable for 25 to 50mm thickness installations, this hatch porthole window is perfect for boat, yacht, ship, and RV installations. It provides a solution for leaky, damaged, or unsatisfactory window, making it versatile for various projects.Specification:Item Type: Hatch Porthole WindowOpening Close Method: Push Pull, with Stainless Steel Support Rod and Locking HandleMaximum Opening Angle: 90 degreesSize: Approx. 375 x 375mm / 15 x 15inInstallation Hole Size: Approx. 310 x 310mm x R45 / 12.4 x 12.4in x R45 (Allow for a 3mm error, use window size for accurate measurements)Thickness Range: Approx. 25-50mm / 1-2inFitment: Suitable for Boat/Yacht/Nautical/RV, can be used for boat yacht RV retrofit and other projects, to provide a solution for your leaking, broken and unsatisfactory window.Package List:1 x Marine Hatch Porthole Window Note:1. The installation is slightly more difficult, it is recommended to find professional engineers to assist the installation to obtain the best shopping experience.2. We will provide high hardness and all round protection of the packaging, the goods delivered to your hands is a new and non damaged state, please pay attention to avoid collision when disassembling.3. Please measure the size before purchase to make sure it is what you need.