The Cambro ESR2172151 is a Camshelving® Elements Full Shelf Rail Kit designed to enhance your shelving system. Measuring 21"W x 72"L x 4-1/4"H, this kit includes two double level side rails and two double level end rails, along with the necessary side and end brackets for easy installation. Constructed from durable polypropylene in a soft gray color, it provides reliable support and organization for your storage needs. Ideal for commercial kitchens and storage areas, this rail kit ensures items remain securely in place while maximizing shelf space.