You may also like. Heavy Duty 5 Tier Rack Plastic Storage Shelf Home Garage Shelving Unit Shelves. 5-Tier Storage Shelf Unit Organizer Garage Home Durable Shelving Heavy Duty Rack. 5Shelf Plastic Garage Shelves lightweight Storage Shelving Unit Black 750Lb Rack. 5 Shelf Metal Muscle Garage Rack Shelving Storage 48″W x 24″D x 72H Heavy Duty. 5 Shelf Storage Shelving Unit Rack Shelves Wide Bookcase Living Room Organizer. 5-Shelf Adjustable Heavy Duty Storage Shelving Unit Organizer Garage Rack Steel. The Muscle Rack heavy-duty 5-shelf steel shelving unit with its patented design and attractive black finish is the perfect storage solution for organizing bulky items in your basement, workshop, garage, business, or anywhere you need heavy-duty vertical storage. It features a stylish black finish, adjustable shelves and it can be assembled horizontally like a workbench or vertically as a shelf unit. Powder coat finish that resists abrasion, chipping, and corrosion for lasting strength and durability. Shelves are adjustable every 1.5 inches. Shelf capacity of 800 pounds based on evenly distributed loads. Boltless rivet-lock design for easy assembly. Can also be assembled horizontally as two 36 high units.