1. INCREASE COOLING PERFORMANCE SAVE MONEY Use the window seal of the air conditioner so that your portable air conditioner works 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! 2. Open the zipper and guide the air hose out of the window seal, then close the zipper around the window seal. You can open or close it at any time without removing the window seal. In seconds, you can enjoy a cooler environment in summer. 3. EASY TO INSTALL No tools or drilling required. Everything you need comes with the window seal! Simply stick the hook tape to the inside of your window frame and the window seal itself, attach the window seal to the hook tape. 4. 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 seal itself. At the same time, it reduces the leakage of cold air and keeps your room cool for a long time. This air conditioner window seal can also isolate insects and mosquitoes and provide you with a cool and comfortable living environment.