The Cambro EXMU215470V4480 is a versatile all-plastic shelving unit designed for durability and mobility. Measuring 21"W x 54"L x 70-1/4"H, this Camshelving® Elements XTRA Mobile Unit features four tiers that can withstand extreme temperatures ranging from -36°F (-38°C) to 190°F (88°C). It includes four vented reinforced polypropylene shelf plates equipped with Camguard® antimicrobial protection, ensuring a hygienic storage solution. The unit is supported by four composite posts and comes with pre-assembled post connectors and wedges for easy assembly. It also includes eight Universal Traverses and four bags of dovetails (eight left, eight right) for secure shelf placement. The four premium swivel casters with total locking brake provide effortless mobility and stability. With a maximum capacity of 900 lbs, this speckled gray shelving unit is NSF certified, making it ideal for various commercial environments. Please note that this product is part of a new line and is not compatible with original Elements Series products.