1、Durable Material: The frame of the round corner window is made of high strength aluminum alloy, coated with black powder to ensure wear resistance and oxidation resistance, long service time in the outdoor environment. 2、Waterproof Window: The fixed window is equipped with waterproof rubber ring to ensure complete sealing and waterproof performance to keep your camper cool in summer and warm in winter. 3、Tempered Glass: The 4mm thickness black tinted glass ensures the overall robustness and safety, and the colored glass effectively resisting heat to prevent overheating camper inside. 4、Easy to Install: With attached retaining rings and screws, with no exposed external fasteners, make the external lines of the window more smooth and provide a solution for your leaking, broken and unsatisfactory windows or broken walls 5、Various Uses: The replacement window is suitable for storage compartments, living rooms, lounges, also for trailers, campers, RVs, construction vehicles, for repair and refit. Item Type: RV Fixed Window Material: Aluminum Alloy Frame, Tempered Glass, Rubber Seal Ring External Window Size: Approx. 530 x 430mm/20.9 x 16.9in Installation Hole Size: Approx. 500 x 400mm /19.7 x 15.7in Application: Rounded fixed windows protect your privacy and ensure that the sun does not heat the inside of your RV, fully sealed windows can keep your camper cold in the summer and warm in the winter, used in storage pods, living rooms, lounges or any location that needs windows, can be used for your camper, trailer, retrofit, and other projects Fitment: For Camper, Trailer, RV, Mobile Home, Construction Vehicle 1 x RV Fixed Window 1 x Fixing Frame 1 x Screw Package (13Pcs)