[ENJOY COOL AIR IN SUMMER] - Our air conditioner window seal blocks the return flow of warm air by locking the hose between the window frame and the window itself. At the same time, it reduces the leakage of cold air and keeps your room cool for a long time. This air con window seal can also effectively isolate insects, dust and mosquitoes, providing you with a cool and comfortable living environment. [INCREASE COOLING PERFORMANCE & SAVE ENERGY AND MONEY] - Uses the aircon window seal to make your mobile air conditioning unit works more efficient and cool your room in less time. Reduces energy consumption and carbon dioxide emissions in the atmosphere, which are particularly elevating in the summer, precisely because of the enormous use of air conditioners. Protects the environment, saves energy, and helps you save on your electricity bill! [EASY TO INSTALL] - No tool or drilling needed. All you need comes with window seal! Simply apply the adhesive hook tape to the inside of your window frame and to the window itself, attach the window seal to the hook tape. Open the zip and place air hose out of the window, then close the zip tightly around the hose. You can open or close the window at any time without removing the window seal. Just seconds, you can enjoy a cooler environment in summer. [ECONOMICAL AND PRACTICAL] - Our ac window seal made of high quality waterproof material, effectively keep warm air , prevent leakage of cold air, keep out insects, dust and rain. Durable and reusable, remove the window seal from the hook tape if not in use, and install it again next summer to save your money! Come with strong hook tape, so that you don't need to worry about the adhesive tape falling off. [UNIIVERSAL WINDOW SEAL FOR PORTABLE AIR CONDITIONER] - This air conditioner window seal is suitable for all , tumble dryer, dehumidifier or other machine with exhaust hose. Application for windows that open to the left or windows that open to the right, bottom hung windows or skylights(not sliding window or door). Colour: White Material: cloth Size: 4 Meters Package Contents: 1 x Sealing cloth Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.