The Eagle Group A4-63-2136Z is a versatile add-on shelving unit designed to enhance your storage capabilities. This 4-tier unit measures 36"W x 21"D x 63"H and features durable wire shelves constructed with a patented QuadTruss® design for optimal strength and stability. It includes two 63"H posts and two "S" hooks per shelf for easy organization and accessibility. The EAGLEbrite® zinc finish provides corrosion resistance, ensuring longevity in various environments. This shelving unit is also KD (knockdown) for easy assembly and is NSF certified for safety and sanitation standards.