Heavy-duty trucks with four (4) shelves. All-welded 12 gauge steel shelves provide plenty of space to transport your large loads. Also used as portable storage racks that can be moved for cleaning, or to different locations as your storage requirements change. Two rigid and two swivel casters with 6 in. x 2 in. phenolic wheels. Comfortable formed 1 in. tubular steel push handle. Shelves are lips down (flush edges). Capacity is 3600 lbs. Overall height is 63-1/2 in. and shelf clearance is 16-1/2 in.