Feature 1High Strength: The whole frame of the round corner window is made of high strength aluminium alloy, and the frame is coated with black powder coating to ensure erosion and oxidation resistance in the outdoor environment. 2Waterproof Rings: The entire frame of the window is fitted with waterproof rings to provide a complete watertight seal to keep your campervan cool in the summer and warm in the winter, with drainage holes underneath the frame to ensure that rainwater runs off. 3Tinted Tempered Glass: 4mm thick tinted toughened glass ensures the overall strength and security of the window and the tinted glass protects against UV rays and heat to prevent overheating inside the cabin. 4Sliding Opening with Screen: RV windows open horizontally, with mesh screen on the opening side, allowing fresh air to flow freely, can be used in storage compartments, living rooms, lounges or wherever a window is needed to brighten the interior or as a ventilation window. 5Wide Applications: Sliding window measures 568x390mmmm in overall, with 21.32x14.24 inches mounting hole size, suitable for walls up to 35mm thick, can be widely used in Teardrop Cargo Horse Trailer campers, RVs, construction vehicles. Item Type: Sliding RV Window Material: Aluminum Alloy+Tempered Glass Size: Approx. 568x390mm / 22.36x15.35in Installation Opening Size: Approx. 533x356mm / 21.32x14.24in Thickness: Approx. 35mm / 1.4in (attached clamp ring) Application: Protect privacy and ensure sunlight without heating up your RV interior. Fully sealed windows keep your camper cool in summer and warm in winter; suitable for storage compartments, living spaces, lounges, or any location requiring windows, suitable for RVs, camper vans, and project vehicles Package List 1 x RV Sliding Window 1 x Fixed Clamp Ring 4 x Drain Hole Plugs 16 x Screws 1 x Installation Manual Note 1. Installation requires drilling holes, we strongly recommend seeking assistance from professional engineers to ensure a perfect shopping experience. 2. Please be careful to avoid any collisions or damages during assembly and disassembly. 3. Before purchasing, please confirm that you have selected the correct size you need.