Feature:1. Heavy Duty Frame: The frame is made of heavy duty aluminum alloy with anodized face, which will not rust even in harsh offshore links or outdoor environments.2. Grey Glass: Adopts 6 mm thick smoked grey tempered glass (E009335 certified), could filters out UV rays while ensuring light can enter the compartment and increase the brightness of the cabin.3. Strong Sealed: The framehas a waterproof rubber ring, strong sealing and waterproof performance, the support rod and hinge are made of 316 stainless steel, corrosion resistance and durable.4. Unique Design: With 425x425mm square shape design, can be opened at 090 degrees, the support rod is designed with rotary fixing knob, can be fixed at any angle support.5. Application: Suitable for 323mm thickness installation, suitable for boat, yacht, ship, and RV, can be used for sunroofs, escape window, storage compartments, rooftops, or any position.Specification:Item Type: Boat Ventilation Hatch WindowMaterial: Aluminum alloy, tempered glass, ABS, rubberOpening Method: Push out type, with stainless steel support rod and fixed handleWindow Size: Approx. 425x425mm/16.73x16.73inInstallation Opening Size: Approx. 360x360mm/14.2x14.2in, R45-4Suitable Installation Thickness: 3-23mm/0.12-0.91inApplication: Suitable for Boat, Yacht, Nautical, RV, which can be used for your marine yacht RV retrofitting and more, providing a solution for your leaky, broken and unsatisfactory windowPackage List:1 xBoat Ventilation Hatch WindowNote:1. Slightly difficult to install, it is recommended to find a professional engineer to assist the installation to get the best shopping experience,2. Provide sturdy packaging to ensure that the sunroof remains in new condition and is delivered to your hands, please pay attention to avoid collisions when disassembling and assembling3. Please measure the size before purchasing to make sure it is what you need