Fixed window for camper caravan 450x450mm rounded black glass with frame for 26-31mm wall1、Aluminum Alloy Frame: The frame is made from high strength aluminum alloy, ensuring long lasting durability and resistance to corrosion and oxidation in outdoor environments. 2、Waterproof Sealing: The entire frame of the window is equipped with waterproof rubber seals to ensure complete sealing and waterproof performance. 3、Thick Tempered Glass: 4mm thick black tempered glass, providing strength and security, effectively blocks UV rays and prevents excess heat buildup inside the vehicle. 4、Versatile Application: This rounded fixed window can be used in storage compartments, doors, roofs, living spaces, lounges, or any other area that requires a window, enhancing interior brightness. 5、Smooth Exterior: Comes with fixed rings and screws, eliminating the need for exposed external fasteners, provides seamless look while solving issues with leaking, damaged windows or walls. 6、Suitable for Various Vehicles: This RV fixed window is suitable for trailers, RVs, construction vehicles, and other similar projects.