Convenient Design: The package includes one portable AC window seals without a zipper for the upper window and one with a zipper for the lower window. The zipper opening design allows for easy placement, removal, and sealing of the exhausting hose or window seals. Easy Installation: Installing the window seals is quick and easy. Simply clean the window opening and frame, apply the fastening tape, and then attach the upper and lower window seals onto the fastening tape, ensuring complete coverage of the window. Please note that the zipper opening of the lower window seals should start from the middle of the window. Good for Summer: The portable AC window seals is specifically designed to seals open window and create a small opening for the exhausting hose of your portable air conditioner. This convenient design not only makes installation easy but also ensures better cooling efficiency for your indoor space. Quality Material: Made from wear-resistant fabric material, this portable AC window seals is built to last. It is also waterproof, windproof, and keeps out flies, ensuring a comfortable and enjoyable indoor air conditioning experience. Two-Piece Window Seals: The package includes two portable AC window seals, with each measuring about 190x40cm/74.80x15.75inch. Please note that this window seals is mainly designed for double-hung window, such as those found in attics.