Window seal for mobile air conditioners, circumference measurement 4 m, white. Prevents the backflow of warm air and moisture. Easy installation - no drilling required. Suitable for casement, tilt, and skylight windows indoors. UV-resistant, waterproof, heat-resistant, washable, and flexible. Made of 100% polyester, with a sewn-in zipper and self-adhesive Velcro strips that attach to windows and window frames. Fits all common window sizes, with a maximum circumference of 4 m. The window seal can be used in both warm and cold seasons. The open zipper allows the end of the exhaust hose to be inserted, preventing the backflow of warm air from outside.