The Metro SM761854-ADD is a cantilevered shelving unit designed to enhance your storage capabilities. This SmartLeverâ„¢ Add-On Kit measures 56-1/5"W x 22-1/2"D x 76-3/8"H and is compatible with 54"W x 18"D Metro shelves. The kit includes one upright, one leg, two cross braces, two cross bars, and all necessary hardware for easy assembly. Constructed from epoxy-coated steel, this shelving unit is durable and resistant to corrosion, making it suitable for various environments. It is NSF certified, ensuring it meets strict public health standards for safety and quality.