General description Improve your cooling performance this summer with our 500CM Portable Air Conditioner Window Seal Kit. This innovative product seals the edges of your window even when it's open, encircling your air conditioner's vent and blocking the return of hot air. This allows your portable air conditioning unit to operate more efficiently and cool your room faster. The kit enhances the thermal insulation of your window, helping to maintain a comfortable temperature while reducing energy costs. Technical specifications Maximum window perimeter: 500 CM High-performance adhesive withstands temperatures up to 80°C Installation No drilling required Simple installation process: attach the adhesive tape, stick the caulking cloth, and seal with the zipper Usage Compatible with various types of windows Works with all portable air conditioning units