1、Sound Prevention: Equipped with screen and sunshade inner frame, the inner frame has 3 modes of application, full insect screen, full privacy curtain, all open, which can well protect privacy and prevent mosquitoes, sound and heat. 2、UV Resistant: Double layer acrylic glass, convex outside and flat inside, which can effectively prevent UV rays, making your RV interior environment more comfortable. 3、Coated Surface: The window frame is made of aluminum alloy, all coated with black paint and polished to a smooth finish, providing a good touch and ensuring resistance to oxidation. 4、Waterproof: Frame with rubber ring to ensure the complete sealing and waterproof performance, providing a solution to your leak, broken and unsatisfactory windows. 5、Opening Angle: The window can be pushed out at a maximum opening angle of 75°, allowing you to better enjoy the scenery during your trip, it is a necessary window for your RV, camper, caravan and trailer.