37849-5, -6, -12, and -13. These 7’ tall bookcases in a grey laminate don’t have invisible shelves, although it looks that way—we’ve got a bin full of shelves just to the side, outside the frame of the photo. These cases are in great shape! One shelf has a cut-out in the lower back (for an electrical outlet). Measures 3’ x 1 x 7’H.