1.EFFICIENT COOLING Enjoy a cooler environment in summer. The seal effectively blocks the backflow of warm air and increases the efficiency of your portable air conditioner or tumble dryer. It ensures that your room cools down in less time and provides a pleasant atmosphere. 2. The gasket is available in 200cm/300cm lengths, making it suitable for various portable air conditioners, dryers, exhaust dryers and dehumidifiers. It is a versatile solution for different devices and types. 3.Compatibility: The seal is designed for frequently used tilting or wings. It can be used with types that open to the left or right, as well as with downhanging s or roof windows. However, it is not compatible with sliding doors or doors. 4.Adjustable and waterproof: the singletube mobile air conditioner sealing cloth comes with an adjustable tension rope and is made of waterproof polyester material. It provides a secure and tight seal around the air.