Excellent sealing effect: This set will make your room cooler and save on electricity bills. It can effectively expel hot air out of the window while preventing warm air from circulating inside. Reusable: This window cover is made of plastic and does not age easily, allowing for year-after-year use. Easy to install and remove: Suitable for sliding windows or sliding doors. Insert the board into the window track and supplement it with window sealing strips to achieve a good sealing effect. Adjustable: Suitable for most vertical and horizontal sliding windows. Packaging contents: 1 x Moving air conditioning exhaust pipe interface, Manufacturer: LXYTT