[INCREASE COOLING PERFORMANCE] Enjoy a cooler environment in summer with OBTAIN portable air conditioner window vent kit! OBTIAN window seal is made of special waterproof and thermal insulation fabrics. It can block the return of hot air, so your portable air conditioner unit can be more efficient and cool your room in less time. [Adjustable Size] Adjustable window kit for portable air conditioner. You can adjust the length according to your needs. Its adjustment range is 35-60 inches, suitable for 35-60 inch single/double hung windows and 35-60 inch high sliding windows, and suitable for pipes of various sizes. [Wide Application] It is not only suitable for portable air conditioners, but also for the exhaust of air purifiers, clothes dryers, tumble dryers and dehumidifiers. [EASY TO INSTALL] You don't need to buy a hose adapter or other additional tools, you only need a set of OBTION window seals to solve it perfectly. Simply apply the adhesive to the inside of your window frame and