The Eagle Group A4-63-2172Z is a versatile add-on shelving unit designed to enhance your storage capabilities. This 4-tier unit measures 72"W x 21"D x 63"H and features durable wire shelves constructed with a patented QuadTruss® design for superior 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 a sleek, corrosion-resistant surface, ensuring longevity and easy maintenance. This shelving unit is also KD (knockdown) for convenient shipping and assembly, and it meets NSF standards for safety and sanitation.