Functional and fits under any 30" high desk. The durable, lightweight construction is resistant to dents, scratches, and stains. Tough yet lightweight and easy to maneuver. Comes with five casters, two locking. Accommodates letter, legal, and A4 folders. The full-extension ball-bearing drawer-slides create a smooth open and close action. Made with blow-molded high-density polyethylene and steel drawer slides.