Thanks everyone for your nice words. They are 18 x 18, we used an exterior grade plywood, painted a base coat, drew on the quilting block and painted with exterior paints. Finished them with a piece of trim around to finish the edges. Would suggest a finish coat of poly (exterior grade ) before hanging them outside. My mom
gave me an old calendar that had 352 quilt blocks in it for the year, was an excellent guide for the blocks. Really was a nice size, the girls hung them by their entry doors into their homes.