The Cambro CPR1842151 is a Camshelving® Premium Full Shelf Rail Kit designed to enhance your shelving system. Measuring 18"W x 42"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, this rail kit provides added support and stability for your shelves, ensuring that items are securely held in place. Ideal for commercial kitchens and storage areas, it helps maximize organization and efficiency.