The Cambro CPHU213667V4480 is a high-density mobile shelving unit designed for durability and versatility. Measuring 21"W x 36"L x 67"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 molded-in dovetails for easy assembly. Equipped with four high-density casters and bumpers, this shelving unit offers mobility and stability. With a maximum capacity of 900 lbs., it is perfect for various storage needs in commercial settings. The speckled gray finish adds a professional touch, and it is NSF certified for safety and quality.