-Lock In Hot Air And Save Energy In Summer: The Portable Air Conditioner Window Seal Is Made Of Durable Nylon For Easy Sliding. Push Through The Tube, The Zipper Closes And The Heat Stays Out. The Practical Airlock Prevents The Hot Exhaust Air From Flowing Back Into The Room. The Windows Can Be Easily Closed When Leaving. No Need To Disassemble It; -Multiple Applications- Window Seal For Portable Air Conditioners Suitable For Portable Air Conditioners, Dryers, Exhaust Dryers And Dehumidifiers. The Airlock Window Seal Is Only Suitable For Commonly Used Up-And-Over Windows Or Casements. It Is Suitable For A Tilting Skylight Product, A Casement Window And A Balcony Door That Opens To The Outside. But It Cannot Be Used On A Door -Easy To Use - Simply Apply The Hook-And-Loop Tape Inside Your Window Frame And The Window Itself. Attach The Window Seal To The Hook Strip. Then, Unzip The Window Seal And Place The Air Conditioning Hose Outside The Window. At The End, Close The Zipper Securely Around The Pipe; -Length 400Cm - The Window Seal Is Suitable For All Commonly Used Window Types, But Not For Left And Right Windows Or Sliding Doors. Please Check The User Manual Carefully Before Purchasing; -Protection Of The Room The Window Sealing Fabric Is Waterproof, Washable And Anti-Insect, Mosquito In Addition, The Window Is Always Full Of Functions. Do Not Damage The Wall. Keep Your Room Clean, Cool In Summer And Safer.