Paper Studio Artist Trading Card Artists Printers Photo Tray - Black. This wooden black photo tray has 12 sections that 12 - 2 1/2 in. x 3 1/2 in. artist trading cards will fit into. There are so many project ideas that come to mind for this great 12 in. x 12 in. Artist Trading Card wall display...think holiday, ATC card storage, Christmas countdown or advent calendar, mini shadow boxes and more!