The Cambro CBR21483151 is a durable shelving ledge designed to enhance your Camshelving® Basic Plus system. Measuring 21"W x 48"L x 4-1/4"H, this kit includes one double level side rail and two double level end rails, along with side and end brackets for easy installation. Constructed from high-quality polypropylene, the soft gray finish complements any environment while providing reliable support for your shelving needs. Ideal for maximizing storage space and keeping items secure, this shelving ledge is a practical addition to any commercial kitchen or storage area.