No more hot air to come in - Window seals block hot air from the portable air conditioning pipe by locking the pipe between the window frame and the window.Our window seals prevent unexpected visitors, rain and crates from entering a "closed environment" to keep your room cooler for longer. Improve cooling performance – enjoy a cooler environment in summer!Source around the open window, then pull the closure around the hose nozzle to prevent hot air from flowing back, so your mobile air conditioning unit can cool your room more efficiently in less time. Reduce energy consumption – take care of the planet!This window seal helps reduce energy consumption and CO2 emissions, which are particularly high in summer due to the intensive use of air conditioning.Sealing your windows prevents hot air from circulating around the room and helps you save on your electricity bills. Easy to install – no drilling required.You don't need to buy window kits, pipe adapters or other tools.All you need is your window seal!Simply stick the hook tape to the inside of the window frame and to the window.Place the window seal on the hook.Next, open the closure on the window seal and push the air conditioning hose out of the window.Finally, tighten the closure firmly around the pipe.Although very simple. Usable for all portable air conditioners and roller dryers, regardless of manufacturer.Whether it is a left or right open window, a bottom hung window or a chandelier, the window seal can play a role.