Improve Cooling Performance - Enjoy cooler conditions during the summer! Our product seals the edges of 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. Optimal Thermal Insulation - Improve the energy efficiency of your air conditioning with our portable air conditioner window kit. It reinforces the thermal insulation of your window, helping to maintain a comfortable temperature while reducing energy costs. High-Performance Adhesive - Our kit is equipped with a robust back glue that withstands high temperatures up to 80°C. This ensures it stays securely in place, ensuring a perfect seal and long-lasting durability. Hassle-Free Installation - No tedious DIY required. Easily install our kit in a few simple steps: attach the adhesive tape, stick the caulking cloth, and seal with the zipper. Voila, your air conditioner is ready to work