With sturdy steel construction, this boltless steel shelving unit is perfect for all the heavy-duty shelving requirements found in the office, commercial and industrial environments. Flexible design allows the unit to be set up as a five-shelf unit at 72" high or a 36" high workbench. This shelving lends a clean look to any space with its hidden assembly and smooth lines. You can adjust the particleboard shelves in 1" increments. Each shelf holds up to 850 lb. evenly distributed. Steel offers a powder-coat finish for durability.