I have 10" rollers on my frame (120") and have been able to do quilts a little over 100" wide with no problem. It is possible to do king-sized quilts on a frame like mine -- just not all at one time. I have zippered leaders and, to do a king-sized quilt, I would simply work on the center 100" of the quilt first, then re-load to finish the right hand side of the quilt and re-load once more to do the left hand side of the quilt. Not ideal, but would work for me the few times that I would want to work on quilts larger than the 10-foot width of my frame.