The Cambro CBR1848151 is a Camshelving® Basic Plus Full Shelf Rail Kit designed to enhance your shelving system. Measuring 18"W x 48"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, the soft gray finish provides a sleek and professional appearance while ensuring long-lasting performance. This rail kit is ideal for maintaining organization and stability on your shelves, making it a practical addition to any storage solution.