Features： 1、Durable Construction: Feature a robust aluminum alloy frame that has been treated with a black powder coating for enhanced protection against oxidation, ensuring long lasting durability. 2、Good Sealing: Designed with a waterproof sealing ring, keeping your vehicle cool in summer and warm in winter, and the drainage holes at the bottom ensures efficient water drainage. 3、Strong and Safe: With 4mm thick black tempered glass that effectively blocks UV rays and excessive heat from entering the vehicle, prevents overheating, ensuring a comfortable environment. 4、Insect Screen: Pulling mechanism for easy opening and closing, equipped with a removable insect screen, effective barrier against insects, ensuring a clean and hygienic environment. 5、Wide Application: Suitable for various areas such as storage compartments, living spaces, lounges, or any area that requires a window for increased brightness or ventilation. Specification： Item Type: Vertical Sliding Windows Material: Aluminum alloy + rubber + tempered glass Window Size: Approx. 530x380mm/20.9x15in Mounting Cut Out Size: Approx. 500x350mm/19.7x13.8in (Please allow 1‑3cm measuring deviation due to manual measurement) Application:  Tinted windows with insect screens can protect your privacy and ensure that the sun will not heat up the interior of your RV, fully sealed windows can keep your camper cold in summer and warm in winter, applied to the storage compartment , living room, lounge or any location that needs windows, it can be used for your camper trailer modification and other projects Applicable Model:  Suitable for camper trailers, RVs, mobile homes, engineering vehicles, etc. Package List： 1 x Vertical Sliding Window 1 x Frame 1 x Pack of Screw (10 Pcs)