The lengths of the sashing vary, but the longest length is 66 1/2", and those are the 2 strips that go vertically between the whole center section (A thru Z) and the light blue borders. You'll be cutting a total of 4 sashing strips, 1 1/2" x 45 1/2", that are the horizontal sashing strips that are above and below the sections of A thru J, and below the sections of K thru O, and T thru Z. Those are all the longest lengths of sashing, and the rest will be shorter, but vary in length. Hope that makes sense, and hope it helps!