EFFICIENT AND EASY INSTALLATION - the window seal for air conditioners is for windows with a circumference of 400 cm. TO MEASURE THE 4 SIDES OF THE WINDOW Simply stick the supplied adhesive tape to the window frame, attach the air conditioner window seal to the window and frame and you're done. The window seal for air conditioning reliably prevents warm outside air from flowing back into the air-conditioned interior and directs the warm air from the air conditioner to the outside local air conditioning. This reduces general energy consumption as the room cools down more quickly and keeps a stable temperature over the long term. The purchase price of the air conditioning window seal pays for itself in a very short time. The window is still fully functional and can still be closed and opened FOR THE ENVIRONMENT - HOOMEE loves the earth This mobile air conditioning window seal helps to reduce energy consumption and reduce carbon dioxide emissions, which are particularly high in summer due to the massive use of air conditioning. PLUS, at the same time it offers a perfect protection against small uninvited summer guests and prevents the ingress of moisture. The window seal for mobile air conditioners is an enrichment for every household impede. For additional support and attachment, the product comes with extra cable ties FOR AIR CONDITIONERS WITH SINGLE AND TWO HOSE TECHNOLOGY - thanks to the two zip openings, the window seal is suitable for all portable air conditioners, regardless of the manufacturer. The window seal material is durable, UV-resistant, water-repellent and washable at 40 C. With German installation instructions