Everything you need to set up a durable, efficient hanging wall file system. Constructed of unbreakable plastic to stand up to busy work environments. Three-Pocket Set—Each pocket: 13.75"w x 3.13"d x 6.63"h. Expand with Single Pocket (sold separately). Mounts to wall. Hanging File Systems Type: Expandable Multiple Pockets; For File Size: A4; Letter; Overall Height: 29.38"; Width: 13.75".