Extra Deep Mobile Tub File features a locking, hinged lid that slides behind the unit when you access files. Includes two keyed alike keys. Top viewing design allows easy filing and retrieval of stored documents. Tub file holds hanging file folders (sold separately). Store binders and more on convenient lower storage shelf. Tub file rolls easily to point of use on four 2" swivel casters (two locking). Made of sturdy steel with a mar-resistant, powder-coat finish. Weight capacity is 300 lb..