This modular boltless, rivet shelving has a two piece post system allowing you to create the work center you need. Modular design, heavy gauge steel frame holds the heaviest loads but assembles fast and easy without nuts or bolts. You can build a complete 72"H storage rack or construct (2) 3 ft. height shelving units or even create a 36"H wood top bench. Double rivet shelf beams just snap into place on 1-1/2"centers, no clips required. Complete 5-shelf unit includes 7/16"particle board shelves. Color is Gray.