Rubbermaid Heavy Duty Utility Cart - Flat Shelf - 500lb - BlackRubbermaid Commercial Products Heavy Duty Utility Cart with Flat Shelf transports materials, supplies, and heavy loads securely. The flat shelf provides a large work surface for oversized loads. High density structural foam construction makes this two shelf rolling cart sturdy, lightweight, and maneuverable. It wont rust, dent, chip or peel and can support up to 500 lbs. Ergonomically superior design with integrated storage and organizational features