Wide Application: Our air conditioner window seal is engineered for mobile air conditioners, tumble dryers, and exhaust air dryers to exhaust the hot air and make the device work more efficiently even with the window open. Suitable: Air conditioner window seal cloth has the feature of good sealing, waterproof, UV prevention and easy installation. We two specifications of 300 cm and 400 cm, and the cloth can be cut off as your need to fit most windows of different sizes. Efficient Cooling, Energy Saving: The AC window seal helps direct the warm air out of the air-conditioned room through the hose and stops it from getting back. Cool your room down more efficiently while reducing energy consumption to save your electric bills and cutting carbon dioxide emissions for environmental protection. Enjoy Cool Air in Summer: Our air conditioner window seal blocks the return of warm air by locking the hose between the window frame and the window itself. At the same time, it reduces the leakage of cold air and keeps your room cool for a long time. This air con window seal can also effectively isolate dust, providing you with a cool and comfortable living environment. No Need to Drilling or Other Tools: This air conditioner window kit including heat-insulating cloth and self-adhesive strap, is very easy and convenient to install. The can not only set the hose easily but can recover quickly anytime, no harm to window or air conditioner. A perfect way to increase cooling performance.