construction: made of quality acrylic glass and an aluminum alloy frame, this rectangular yacht window features a flat convex area that is UV resistant, heat resistant, and resilient. The long lasting design provides safety and reliability for your RV, camper, or trailer adventures. Multifunctional design: this window offers opening, closing, ventilation, light transmission, sunshade, sound insulation, heat insulation, and privacy protection. Its waterproof performance keeps your interior dry in all weather conditions. Easy operation system: equipped with handle switches and sturdy window support rods that let you enjoy the scenery while traveling. The integrated sunshade blinds and screens help maintain fresh air circulation throughout your vehicle. size for various applications: designed for caravans, RVs, trailers, and modified vehicles with dimensions of 40×20CM (19.7×11.8 inches). Recommended for RV body thickness between 1.1 2 inches, making installation straightforward and secure. Use scenarios: Install in an RV living area window to improve ventilation while maintaining privacy and light control during daytime travel. Fit in a camper or trailer kitchen or bathroom window to manage heat and moisture with reliable waterproof performance. Use in a caravan rear or side window to provide weatherresistant ventilation and sound insulation on long road trips.