Everything you need to set up a durable, efficient hanging wall file system. Constructed of unbreakable plastic to stand up to busy work environments. Each pocket: 13 3/4"w x 3 1/8"d x 6 5/8"h. Expand with Single Pocket, sold separately. Mounts to wall. Hanging File Systems Type: Expandable Multiple Pockets; For File Size: A4; Letter; Overall Height: 29 3/8"; Width: 13 3/4".