Initiate filing innovation. Extra-deep design helps those with extra work to store. Durable steel construction with a locking lid (two keys included) slides behind the unit for access to files. The top-viewing design allows easy filing and retrieval of stored documents. Holds letter-size hanging file folders (not included). Economy Tub File includes a convenient lower storage shelf and four swivel casters (2 lockings) that make it so files roll easily to the point of use.