About this item:【Enjoy Cool Air】 – Window seal for portable air conditioning is made of durable plastic material for easy sashing slide. Push through the tube, the zipper closed and the heat stays outside. The practical airlock prevents the warm exhaust air from returning into the room and prevents cold air from escaping and keep your room cool for a long time.【Save Energy and Protect Environmental】 – Window seals are very helpful to reduce energy consumption and carbon dioxide emissions. Using Our window seal is also a way to protect the environment It is great to be able to enjoy the cool while protecting the environment.【Multiple Applications】 – Window seal for portable ac units suitable for portable mobile air conditioners, .