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 950 lb. evenly distributed. Steel offers a powder-coat finish for durability.