The Cambro CBR1872151 is a durable shelving ledge designed for the Camshelving® Basic Plus system. Measuring 18 inches wide by 72 inches long and standing 4-1/4 inches high, this full shelf rail kit enhances storage stability and organization. It includes two double level side rails and two double level end rails, along with side and end brackets for easy installation. Constructed from high-quality polypropylene in a soft gray color, this shelving ledge is both sturdy and aesthetically pleasing, making it ideal for various commercial and industrial applications.