Nexel® Poly-Z-Brite® Wire Shelving Starter Unit - 5 Tier - 72"W X 24"D X 63"H Poly-Z-Brite® Features A True Powder-Epoxy Over Zinc-Chromate Electro-Plating That Ensures A Strong Durable Finish And Handles Temperature And Moisture Extremes Well. Nex Gard ®, An Anti-Microbial Agent Protects The Epoxy Coating From Bacteria, Mold, And Mildew That Causes Odors And Product Degradation. Open Design Maximizes Air And Light Circulation And Minimizes Dust Accumulation. Shelves Easily Adjust Without Tools And Align Accurately At 1" Increments. Shelf Clips Snap On Post, Allowing Shelf Collar To Slide Over For A Secure Fit. Limited Fifteen-Year Warranty Against Rust And Corrosion. Starter Units Include 5 Shelves, 4 Posts, Shelf Clips And 4 Adjustable Leveling Feet (With Non-Marring Floor Glides) Which Allow Compensation For Uneven Floors.