1、Rugged Construction: The entire frame of the sliding window is made from high strength aluminium alloy and the frame is powder coated black to ensure rust and oxidation resistance for outdoor environments. 2、Prevent Rain Entering: The entire frame is sealed with a waterproof rubber ring to keep your camper cool in the summer and warm in the winter, and there is a drainage hole underneath the frame to ensure rainwater runs off. 3、Tempered Glass: 4mm thick black tempered glass (E32 certified) ensures that the window is strong and secure throughout and is resistant to UV rays, sound and heat. 4、3 Modes: With screen and sunshade inner frame, the window can be applied in three modes, with full insect screen, full privacy curtain, or full opening, for good privacy and protection against mosquitoes. 5、Wide Applications: Sliding opening, one side of the glass can be slid open, the window can be used in hatches, living rooms, lounges or wherever a window is required, to enhance interior brightness or for ventilation.