1、Portable Air Conditioner Window Seal: Our window seal leaves out unwanted guests, rain and crates a closed environment that keeps your room cool for longer. Waterproof and dustproof. It protects the internal devices of the air conditioner from dust and water vapor and prolongs the service life of the air conditioner. 2、Increase Cooling Performance: Enjoy a cooler environment in summer. Stopping the return flow of warm air and making your air conditioner as efficient as possible. It can be more efficient and cools your room in less time. 3、Energy Saving: This window seal contributes to reduce energy consumption and to lower carbon dioxide emissions, which is particularly high in summer due to the massive use of air conditioning. Preventing warm air circulating in your room. 4、Adjustable Size: The length can be adjusted according to the size of the window, adapting to different window sizes, with a certain degree of universality and flexibility. Simple and easy to use design, convenient for users to install by themselves, no need for professional skills. 5、210T Waterproof Material: Portable air conditione window seal is made of 210T waterproof material, resistant to pressure and stretching, ensuring long lasting use without deformation. Item Type: Portable Air Conditioner Window Seal Material: 210T Waterproof Material 1 x Portable Air Conditioner Window Seal 1 x English Instruction Manual 1 x Hook and Loop Fastener