I have a late 31 but I assume they would be close if not exactly alike. The lower board is 32" at the wide part and narrows down to 28" and is 17" deep. The upper board is 28" wide by 9" tall. This doesn't account for the overlap at the joint where they meet. If you want to cover the whole area that the carpet does, that is approximately 39x32 inches. Hopefully this will help.