The Cambro EXMU214270V4480 is a durable all-plastic shelving unit designed for versatility and strength. Measuring 21"W x 42"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 setup. It also includes eight Universal Traverses and four bags of dovetails (eight left, eight right) for secure shelf placement. Mobility is enhanced with four premium swivel casters featuring a total locking brake, allowing for easy transport and stability. With a maximum capacity of 900 lbs and a sleek speckled gray finish, this shelving unit is NSF certified for safety and quality. Please note that this product line is not compatible with original Elements Series products.