Stay strong with this boltless steel shelving unit. the sturdy steel construction is perfect for all the heavy duty shelving requirements found in the office, commercial and industrial environments. the flexible design allows the unit to be set up as a 5 shelf 72-Inch high shelving unit, or a 36-Inch high workbench. this unit will lend a clean look to any space with its hidden assembly and smooth lines. and depending on your needs, you can adjust the shelves in 1-Inch increments. no need to take your time putting this one together, it assembles with no tools needed. strength, utility and ease its the perfect shelving unit. includes particle board shelves. powder coat finish in black.