The Cambro CBA213684S4580 is a durable all-plastic shelving unit designed for versatile storage solutions. Measuring 21"W x 36"L x 84"H, this 4-tier Camshelving® Basics Plus Add-On Unit is engineered to withstand extreme temperatures ranging from -36°F (-38°C) to 190°F (88°C). It features four solid polypropylene shelf plates equipped with Camguard® antimicrobial protection, ensuring a hygienic storage environment. The unit includes two composite posts with leveling feet for stability, pre-assembled post connectors and wedges for easy assembly, and eight traverses for secure shelf placement. Each shelf can support up to 600 lbs, with a maximum capacity of 1,800 lbs, making it ideal for heavy-duty storage needs. Finished in brushed graphite and NSF certified, this shelving unit combines functionality with a sleek design.