Ideal storage solution for industrial and commercial use. Snap-together design assembles in minutes. Strong welded wire construction. Can be set up as a four-tier single rack or as two two-tier racks to meet specific needs. Open design allows air circulation and reduces dust build-up.Package Includes: (4) Shelves; Posts; Feet Leveling Glides; Conversion Kit to Convert to Two Half-Height (36"H) Two-Shelf Units