Initiate filing innovation. Extra deep design helps those with extra work to store. Durable steel construction with locking lid (two keys included) slides behind unit for access to files. 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 locking) that make it so files roll easily to point of use.