1Durable Material: The frame of the round corner vertical sliding 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. 2Waterproof Window: The vertical sliding 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. 3Tempered Glass: The 4mm thick black tinted vertical sliding glass ensures the overall robustness and safety, and the colored glass effectively resisting heat to prevent overheating camper inside. 4Single Side Control: The sliding window can be opened or closed by sliding one side, with removable insect netting to prevent insects and mildew, can be used to enhance indoor brightness or as a vent window. 5Various Uses: The replacement vertical sliding window is suitable for storage compartments, living rooms, lounges, also for trailers, campers, RVs, construction vehicles, for repair and refit.