Feature:1. Opening Angle: Square design porthole window with external push opening, which can be opened at any angle from 090 degrees, convenient for you to enjoy the scenery and escape.2. UV Resistant: Tempered glass can filter out UV rays while ensuring that light can enter the compartment, enhancing the brightness of the cabin, and can also be used for ventilation windows.3. Exquisite Frame: The overall frame of the window is made of heavy duty aluminum alloy with anodized surfaces polished to a smooth finish, providing a smooth touch that ensures resistance to oxidation, even in harsh marine or outdoor environments.4. Sturdy Structure: 6mm thick tempered glass ensures the overall sturdiness and security of the window, the support bars and hinges are made of 316 stainless steel to ensure the overall durability of the porthole.5. Application: Suitable for 323mm/0.120.91in thickness installation, can be used for boats, yachts, ships, and RVs, also can be used for sunroof, escape window, storage compartment, roof, or anywhere.Specification:Item Type: Boat Porthole WindowMaterial: Material: Aluminum alloy, tempered glass, ABS, rubberSwitching Method: External push type, with stainless steel support rod and fixed handleWindow Size: Approx: 575x575mm/22.63x22.63inInstallation Hole Size: Approx: 510x510mm/20.07x20.07inSuitable for Installation Thickness: Approx: 323mm/0.120.91inApplication: Suitable for boat, yacht, marine, RV, can be used for your ship yacht RV conversion and installation projects, providing a solution for your leaking, broken and unsatisfactory windows..Package List:1 xBoat Porthole WindowNote:1. Installation is slightly difficult, it is recommended to find a professional engineer to assist in the installation of the best shopping experience.2. Please pay attention to avoid collision when disassembling and assembling.3. Please allow slight error due to manual measurement. Thanks for your understanding.4. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.