25% more weight capacity and 30% more shelf surface than standard duty models Durable shelves each fit two standard bus tubs Stain and odor resistant material maintains attractive appearance Seamless, contour shaped shelves with rounded corners are attractive and easy to clean Extruded aluminum legs are sleek and durable No-Mark 4" clear polyurethane wheels are quiet and attractive Dual handles allow pushing or pulling from either end to better navigate congested areas. Assembles easily without hardware