RV owners and renovators, this CNCEST vertical sliding window is exactly what you need for upgrading or replacing your RV windows! The 42x22 inch size (106.7x55.9cm without the fixed ring) is substantial and lets in plenty of natural light while offering panoramic views. The vertical slide design is so practical - it allows for controlled ventilation and easy operation with the provided handle. Made from aluminum alloy with tempered black glass that has 20% transmittance, it's both sturdy and provides some privacy. The universal fit works for RVs with sheet metal thickness between 2-6mm (0.08-0.24 inches) or 48-55mm (1.89-2.17 inches), making it compatible with many models. Installation is straightforward as a direct replacement - it comes with a mounting trim ring and screws for secure, professional-looking installation. The 12 drainage holes prevent water accumulation, and the gutter design manages moisture effectively. The black color gives it a modern, sleek look that enhances your RV's aesthetics both inside and out. The center column measures 56.78cm (22.35 inches) and provides structural stability. At 7.6kg (16.76lbs) net weight, it's substantial without being overly heavy. The enhanced ventilation is a game-changer for air circulation in your RV, and the easy operation means you can adjust it quickly while driving or parked. If you're dealing with old, leaky, or damaged RV windows, this replacement delivers that professional-grade functionality and durability that makes RV living more comfortable and enjoyable. It's one of those upgrades that improves both the appearance and functionality of your vehicle significantly.