So, you need finished sizey 3 1/2" of border add 1/2" for seam allowance so 4" would bring your 96 1/2" up to 100"
Oops, just realized you want 2 not one border... So, you still need the 3 1/2" total, split in half is 1 3/4" add 1/2" seam allowance to that each border would be cut 2 1/4"
Last edited by ckcowl; 10-24-2014 at 08:11 AM.