I have a Bernina frame made by Grace Company and I use my Bernina 440 on it. I have approx. 5" of quilting space. My frame is large enough to do a king size quilt but I can take it apart and set it up to be 6' wide instead if I want to do that. I would recommend that you go to a shop or quilt show and see what is available, try out different machines on frames. If you just want a frame, shop around and check out used frames. If you want new, look at Grace Company. They are the Cadillac of frames.