This is a vinyl curtain that blocks cold air. In the photos, it's used in winter, attached to a window to block cold air from outside. However, in my home, I used it to divide a large living room in half to improve the efficiency of the air conditioner and save on electricity bills. It was very helpful, and there was a significant temperature difference between the air-conditioned side and the other side of the curtain. However, I've changed the layout of my living room and no longer have a use for it, so I'm offering it to someone who can use it. I have another one of the same item for sale, so you can connect four panels together (one of the four is unused). Please note that due to shipping costs, the price will not change even if you purchase them at the same time, and they will be shipped separately. For those looking to save money, even a little, during the hot summer... #MercariHalloween #VinylCurtain