1. INCREASE COOLING EFFICIENCY SAVE MONEY – Use the air conditioner window seal to make your portable AC work more efficiently and cool your room faster. Reduces energy consumption and carbon dioxide emissions into the atmosphere, which are especially high in summer due to the heavy 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, then close the zipper around it. You can open or close it anytime without removing the window seal. In seconds, enjoy a cooler environment during summer. 3. ENJOY COOL AIR IN SUMMER – Our air conditioner window seal blocks the backflow of warm air by sealing the gap between the window frame and the unit itself. At the same time, it reduces cold air leakage and keeps your room cool for longer. This AC window seal also effectively keeps out insects and mosquitoes, providing you with a cool and comfortable living environment. 4. EASY TO INSTALL – No tools or drilling required. Everything you need comes with the window seal! Simply attach the hookandloop tape to the inside of your window frame and the unit itself, then secure the window seal to the hookandloop tape.