I just got the first ones to come up on Amazon.com when I typed in comic book boards. They were 7 X 10.5 inches. Love them. Coated, heavy enough, acid free. I used 300 in one day. They help so much when putting fabric in bookshelves and even when layered in big totes since they do not come apart or get messy when being moved around or sorted. Be sure and have a big pin for each board or two, one for top and bottom of board. It takes a long pin to go though the fabric.