Dulepax Vertical RV Window, 18" W x 15" H Tinted Slide Trailer Window, Tempered Glass Camper Window Replacement with Net Screen and Trim Ring, DOT Approved Durable Material: Dulepax vertical RV window features anodized aluminum framing, which is easy to maintain and corrosion-resistant and significantly extends its lifespan. Lightweight aluminum alloy frame is waterproof and dustproof, protect your camper in any conditions. Safe Privacy : This camper window is built with tempered glass, which is stronger than regular, RV window will fracture into small relatively harmless pieces if impacted. The dark glass not only provides enhanced privacy, but also provides thermal and sound insulation. Reinforced Mesh Screen: Mesh screen ensures a steady flow of fresh air. While protecting privacy, it can also prevent small insects from entering the RV during ventilation Size Suggestion: The Rough Opening is 18" Width, 15" Height. RV windows are suitable for walls with a minimum thickness of 60mm. RV walls thinner than 60mm cannot be fitted with trim ring, and there may be small gaps between the trim rings and window frames on slightly thicker wall.