The backing block in 10 1/2 inches, the inside batting block is 8 inches so that leaves the frame size 1 1/4 all the way around. When you sew it together you get a sashing of 1 1/4 inches. You could make it wider by making your frame template wider. I cut my strips to 2 inches so it gives me a 1 1/2 inch strip when done. I did not follow a pattern just the method. By making it 7 blocks wide and 8 long I should end up with a twin size quilt about 52 12 x60 or 8 rows would be 52 1/2 x67 1/2.
Clear as mud?