NO MORE INTRUSIVE HOT AIR - The seal for windows directs the hot air diffused by the pipe of your portable air conditioner 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 an environment cooler in summer thanks to ! Our product seals the edges of your window even when open. It encircles your air conditioner's vent duct and blocks hot air return, allowing your portable air conditioning unit to be more efficient and cool your room faster. REDUCES THE ENERGY CONSUMPTION love the Earth! This window seal helps to reduce energy consumption and carbon dioxide emissions, which is particularly important in the summer due to the heavy use of air conditioners. By preventing hot air from circulating in your room, the window seal saves you money on your electricity bills! AVAILABLE IN 4 SIZES - Suitable for all portable air conditioners and clothes dryers, regardless of manufacturer. This joint can support up to two vent pipes. This kit contains 2 fabrics of 190 cm each. Measure the perimeter of your window to choose the correct size. This kit is suitable for windows with a perimeter of up to 380cm. EASY TO INSTALL - NO DRILLING - No need to buy anything extra, everything you need is supplied with your Seal for Windows! Both fabrics will cover the top and bottom of your center pivot window. Once properly installed, you can easily close your window by detaching the 2 fabrics from the adhesive strip.