Googled the pattern. It says Finished Quilt is 66” x 80”. If the border fabrics and the sashing all finish at 2" (so 2 6 inch borders, 3 sashing strips) this would be 18" for borders & sashing. If the quilt is 66", and you subtract 18", then you have 48" left for the blocks, or four 12" blocks.
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to double check, you have 20" in borders & sashing the long way. This leaves 60" for 5 blocks. Again a 12 inch block.
Last edited by PaperPrincess; 04-03-2016 at 07:46 AM.