1. ENJOY COOL AIR IN SUMMER Our air conditioner window seal blocks the backflow of warm air. It locks between the window frame and the window itself. At the same time, it reduces the escape of cold air and keeps your room cool for a long time. This air conditioner window seal can also effectively isolate insects and mosquitoes and provide you with a cool and comfortable living environment. 2. EASY TO INSTALL No tools or drilling required. Everything you need comes with the window seal! Simply stick the hook tape on the inside of your window frame and on the window itself, attach the window seal to the hook tape. 3. INCREASE COOLING PERFORMANCE SAVE MONEY Using the air conditioner window seal makes your portable air conditioner work more efficiently and cools your room in less time. Reduces energy consumption and carbon dioxide emissions into the atmosphere, which are particularly high in summer due to the enormous use of air conditioners. Protects the environment and helps you save on your electricity bill! 4. Open the zipper and guide the air hose out of the window, then close the zipper around it. You can open or close the window at any time without removing the window seal. In seconds, you can enjoy a cooler environment in summer.