NO MORE INTRUSIVE HOT AIR - The window seal keeps the hot air released by your portable air conditioner's hose away by blocking it between the window frame and the window itself. Our window seal keeps unwanted guests and rain out and provides a "closed environment" that helps keep your room cooler longer. INCREASES COOLING PERFORMANCE - Enjoy a cooler environment in the summer thanks to! Our product seals around your window even when it's open. It encircles your air conditioner's vent and blocks the return of hot air, allowing your portable air conditioning unit to be more efficient and cool your room faster. REDUCES ENERGY CONSUMPTION – loves the Earth! This window seal helps reduce energy consumption and carbon dioxide emissions, which is especially important in the summer due to the heavy use of air conditioners. By preventing hot air from circulating in your room, the window seal allows you to save on your electricity bills! EASY INSTALLATION - NO DRILL REQUIRED. Everything you