NO MORE INTRUSIVE HOT AIR - The door seal keeps the hot air released by the hose of your portable air conditioner away by blocking it between the window frame and the window itself. Our window seal prevents unwanted guests and rain from entering and provides a closed environment that helps keep your room cooler for longer. INCREASES COOLING PERFORMANCE - Enjoy a cooler environment in the summer! Our product seals the edges of your sliding door even when it is 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 sliding door seal helps reduce energy consumption and carbon dioxide emissions, which is especially important in summer due to the heavy use of air conditioners. By preventing hot air from circulating in your room, the door seal allows you to save money on your electricity bills! EASY INSTALLATION - NO DRILL