I just measured mine and they are 102 inches. It has been a while since I set mine up...but I think I just cut the fabric ,that came with the frame,in three pieces and serged around the edges.
not sure how you are using yours, but I absolutely love my set up. I use the frame with the mega quilter sewing machine with stitch regulator. I did buy my setup brand new..but it has more than paid for itself!