No hot air incomes: EGNBU air conditioner window seal keeps the warm air out of the hose of your portable air conditioner by locking the hose between the window frame and window housing. Our window seal keeps insects, mosquitoes, rain out and creates a "closed environment" that keeps your room cooler for longer INCREASE COOLING PERFORMANCE：Enjoy a cooler environment in summer thanks to EGNBU! EGNBU window seal air conditioner around your window and then zips around the nozzle of your hose and blocks the return flow of warm air, so that your mobile air conditioner is more efficient and your room cools in less time REDUCE ENERGY CONSUMPTION：EGNBU loves the Earth. This window seal helps to reduce energy consumption and reduce carbon dioxide emissions, which is particularly high in summer due to the massive use of air conditioners. EGNBU window seal for air conditioners prevents warm air from circulating in your room and saves you on electricity bills Easy to install: no need for drilling holes. No need for window kits, everything you need comes with your EGNBU window seal! Simply apply the adhesive hook tape to your window frame and to the window bag. Attach the window seal to the hook tape. Then open the zip on the window seal and put your air conditioning hose out of the window. At the end, close the zip tightly around the hose Universal: suitable for all portable air conditioners and tumble dryers. Whether for windows that open to the left, or for windows that open to the right, windows hanging down or skylights, EGNBU Window Seal will do the job. It fits a window with a maximum circumference of 400 cm