INCREASES COOLING PERFORMANCE - Enjoy a cooler environment in summer Our product seals the edges of your window even when it is open. It encircles your air conditioner's vent duct and blocks hot air return, allowing your portable air conditioning unit to be more efficient and cool your room faster. INCREASES COOLING PERFORMANCE - Enjoy a cooler environment in summer Our product seals the contours of your sliding door even when it is open. It encircles your air conditioner's vent duct and blocks hot air return, allowing your portable air conditioning unit to be more efficient and cool your room faster. REDUCES ENERGY CONSUMPTION loves the Earth This seal for sliding doors helps to reduce energy consumption and carbon dioxide emissions, which is particularly important in summer due to the heavy use of air conditioners. By preventing hot air from circulating in your room, the door seal allows you to save money on your electricity bills EASY INSTALLATION - NO DRILL. Everything you need comes with your Door Seal Simply apply the tape to the inside of the door frame as well as to the door. Attach the caulking fabric to the tape. Then, unzip and place your air conditioner hose outside the door. Finally, close and tighten the zipper around the pipe. It's as simple as that. UNIVERSAL- Suitable for all portable air conditioners and clothes dryers, regardless of manufacturer. Whether it's doors that open to the left or to the right, the door seal will do the trick. This product is suitable for doors with a maximum perimeter of 90x210 CM.