Standard Frame Sizes 4"x5" 4"x6" 6"x8" 5"x7" 8"x10" 8"x12" 8-1/2"x11" 9"x12" 10"x13" 11"x14" 12"x16" 14"x18" 16"x20" 20"x24" 22"x28" 24"x30" 24"x36" 30"x40"     Logan products are available at thousands of authorized retailers worldwide (find one here). Sorry, Logan does not sell directly to the public.