Smead Heavy-Duty A-Z Open Top Expanding Files, 21 Pockets, Letter, PurpleFeatures sturdy construction where you need it most. Reinforced liners on the front and back panels as well as reinforced full-height gussets for durable expansion. 7/8" expansion per pocket. Preprinted indexes. This product was made from wood sourced from a certified managed forest. Expandable File Folder Type: Open Top File; Indexed; Size: Letter; Width: 12"; Height: 10".