Window Seal for AC Unit Window Seal For Portable Air Conditioner Sealing AC with Zip and Adhesive Fastener Best Way to Seal Casement Window With Maximum Length of 158 inches KEEP THE HOT AIR OUT The whole point of air conditioners is to cool the air. This window seal for portable air-conditioners kit keeps the cool air inside your room by effectively diffusing the hot air out of the window. The window seal tightly locks the hose from your air-conditioner between the window and window frame. It fits windows with a maximum perimeter of 158 inches. BARRIER AROUND THE WINDOW FRAME Our window seal creates a barrier around your open window, zips around your portable air conditioner exhaust hose. This prevents the hot summer air from entering your room and makes your air-conditioner much more efficient as it was before. Your AC will cool your room quicker and cheaper NO MORE INSECTS tired of flies and mosquitos? This product also keeps the insects outside EASY STEP-BY-STEP INSTALLATION (WITH PICTURES) All you need for installation of this window seal is already included in your package. No need for expensive installation kits and tools It is very simple and best used on casement windows of maximum perimeter of 158 inches.