Keep Warm Air In: The window seal kit for portable air conditioners keeps fresh air in your room by effectively diffusing warm air through the window. Prevent hot air from circulating in your room, your room cool Convenient and Practical: Made of nylon, just place a zipper between the window and the window frame, effectively regulate air exchange and protect from dust and rain. The windows close easily when going out. No need to disassemble. Easy to install: Simply apply the hook adhesive to the inside of the window frame and the window itself. Place the window seal on the hook. Then open the zipper on the window seal and place your air conditioner hose. At the end, close the zipper tightly around the hose. Non-damaging window: The AirLock seal is suitable for commonly used window types (windows or tilt-and-turn wings), except that the product is not suitable for rotating and tilting skylights. Suitable for windows up to 400 cm on three sides. Color: White Material: Cloth Package