The Cambro CPA215464V4480 is a durable and versatile shelving unit designed for optimal storage solutions. Measuring 21"W x 54"L x 64"H, this 4-tier Camshelving® Premium Add-On Unit is built to withstand extreme temperatures ranging from -36°F (-38°C) to 190°F (88°C). It features four vented polypropylene shelf plates that incorporate Camguard® antimicrobial protection, ensuring a hygienic storage environment. The unit comes with a pre-assembled post kit, featuring steel posts with a polypropylene exterior for enhanced durability. Included are eight traverses and molded-in dovetails for easy assembly and stability. Each shelf can support up to 800 lbs., with a total maximum capacity of 2,000 lbs. The speckled gray finish adds a professional touch, and the unit is NSF certified for safety and quality.