The Cambro CPMU214275V4480 is a premium mobile shelving unit designed for durability and versatility. Measuring 21"W x 42"L x 75"H, this 4-tier 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 enhanced with Camguard® antimicrobial protection, ensuring a hygienic storage solution. The unit includes two pre-assembled post kits made of steel with a polypropylene exterior for added strength, along with eight traverses and two sets of post connectors for easy assembly. The molded-in dovetails provide secure shelf placement, while four premium swivel casters with total locking brakes allow for 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.