Short, tear-resistant gusset on tab edge of pocket allows contents to be inserted or removed without pulling pocket from shelf. Full-height, fully lined Tyvek gusset on opposite side provides additional strength. Double-thick front and back. This product was made from wood sourced from a certified managed forest. Expandable File Folder Type: File Pocket; Size: Letter; Width: 12 1/4"; Height: 9 1/2".