Adjustable size: Choose between two lengths, approximately 300cm or approximately 400cm, to the length of our air conditioner gasket according to your needs. This seal fits all types of sliding windows (horizontal or vertical) and is compatible with all portable air conditioners or air dryers. Prevent air leakage: Crafted with special TU fabric and treated with a heatinsulating bleaching process, our seal effectively blocks the loss of cold air while reflecting sunlight and heat outside. It helps reduce energy waste and costs as it quickly cools down the room. Complete sealing: Our air conditioner seal creates a tight, gap installation thanks to its material and expanded firm sticker. It not only prevents cold air from escaping but also keeps flies and other pests out, providing protection. Enhanced detail: Featuring precise cutting and routing areas, our seal allows for easy adjustment and without distortion. The texture treatment near the outlet prevents the tape from dropping after inserting the air hose, delivering a seamless, gap seal. Use scenarios: In homes or apartments with sliding windows, seal around a portable air conditioner to improve cooling efficiency and reduce running time. In office or studio spaces with sliding windows, use with a portable air dryer or AC to minimize drafts and lower energy costs. In environments where window gaps vary or multiple windows are used, the adjustable length and secure fit help maintain comfortable temperatures without pests or drafts.