text: These are beautiful and look like jewelry. I bought them to use on a balloon tie up shade on my front door. The window is about 70 inches long and 28 inches wide. The fabric is a heavy polyester that is lined with blackout lining. These magnets are strong enough to hold up the curtains. I used one on each side. See photos. I had bought two other sets of magnetic door curtain tie backs, and neither of them held because the magnets were not strong enough. I highly recommend these magnetic door curtain tiebacks.