document box
n.
A container that holds folders containing paper documents vertically and that measures roughly 10 inches high, 12 or 15 inches wide, and 6 or 3 inches deep, and that usually has an integral top hinged at the upper back.
Notes
Sometimes called a Hollinger Box. Document boxes are typically made from cardboard. They are often neutral gray and lined on the inside with white, acid-neutral paper. Boxes made from lignin-free cardboard are often tan and unlined. They may have a string, handle, or hole on one end to facilitate removal from a shelf. Document boxes made from high-quality materials suitable for long-term storage of archival materials are often called archives boxes.
