I have been told that the major shows require a 4" hanging sleeve. I can understand that for a large quilt, but not for a small wall hanging. We're having a quilt show next weekend (10/17-18) and I've been sewing 4" hanging sleeves on all my quilts for the show. I start with a 9" piece of fabric. Most of them I have just basted on, because I don't need the sleeves after the show.