I currently have a window that consists of 3 windows measuring around 130". I'm told that the wrap around the window has to be in two pieces however when I was sold the windows I was told it could all be one piece across the top outside. Is there trim available for that measurement? My understanding was that the material came on a roll and was cut to size. It's more about the tool required for the cut. Can you tell me which is correct? I now have a horrible window with a seam in the center on the outside. It looks terrible.