Our Heavy-Duty Shelf Units are just what you need to organize your workshop, garage, business or home. These industrial strength shelves are made from durable steel, have epoxy-coated finishes, and come with adjustable particle board shelves that are rated to handle 200-700 pounds per shelf! You can build these shelves upright or in two short shelves, so you can easily fit them in any room. These storage racks feature either a Z-beam or L-beam shelf support, a boltless keyhole design, and heavy gauge steel angle posts for stability. The manufacturer offers a lifetime warranty so these shelves are the only ones you will even need to buy. These units come boxed for easy shipping and with the tool-free assembly, setting them up where you need the storage space is fast and easy!