Improve Cooling Performance: Enjoy cooler summer weather! Our product seals the edges of your window even when it's open. It surrounds the air conditioner vent and blocks the return of hot air, allowing your portable air conditioner to be more efficient and cool the room faster. Optimal Thermal Insulation: Improve the energy efficiency of your air conditioner with our portable air conditioner window kit. It strengthens the window's thermal insulation, helping maintain a comfortable temperature and reducing energy costs. High-Performance Adhesive: Our kit features a robust backing that withstands high temperatures up to 80°C. This ensures it stays firmly in place, ensuring a perfect seal and long-lasting durability. Hassle-Free Installation: No tedious DIY work required. Easily install our kit in just a few simple steps: apply the tape, stick the sealing cloth, and seal with the zipper. That's it, your air conditioner is ready to operate efficiently. Versatility and convenience: