Itll all roll together with the rolling project file! The strong tubular steel frame with chrome wire supports letter and legal-size folders (not included), 18" x 14" folders (Model 5038, (sold separately) or holds up to 12 Hanging Clamps (Model 50016). File folders and clamps must be ordered separately. Tucks neatly under most work surfaces when not in use. Bottom basket creates additional storage space. Includes four swivel casters (2 locking) for easy mobility.