The Extra Heavy-Duty 3800 lb Shelving by Norwood supports your heaviest, bulkiest items. The ultra durable steel frame features rugged particleboard shelves and boasts a total weight capacity of 3,800 pounds, or 900 pounds per shelf. The boltless frame snaps together quickly with a simple rubber mallet, and can be assembled vertically or horizontally. Double rivet beams ensure the shelves won't wobble or tip. Plus, the black powder-coated finish is rust resistant. Customize your set up by attaching adder units to a starter unit. Available in several different sizes.