Energy Saving And Emission Reduction: Air conditioning window seals can prevent hot air from entering, help to cool, and improve air conditioning refrigeration performance. This reduces energy consumption and saves electricity bills. Keeps The Cool Air In: The whole point of air conditioners is to cool the air. The window seal for the portable air-conditioners kit keeps the cool air inside your room by effectively diffusing the hot air out of the window. Your AC will cool your room quicker and cheaper! The air con window vent kit also blocks flying insect and spiders from entering the room through windows or door seams. 300CM/400CM Window Perimeter: Suitable for all commonly-used window types that open to the left or windows that open to the right, bottom hung windows, or skylights(not sliding windows or doors). Suitable for all mobile air conditioners units and tumble dryers regardless of manufacturer. Easy To Install: All you need for the installation of our window seal is already included in your package. No need for expensive installation kits and tools! Spares you from having to undertake the often and laborious task of drilling a hole through the wall. In just seconds, you can enjoy a cooler environment in summer. Convenient This airconditioning window sealing cloth is made of highquality polyester material waterproof and light-permeable, washable. If you think the air conditioner window seal is dirty, you can remove it for cleaning, and then reinstall it.