The Cambro ESR21603151 is a durable shelving ledge designed for Camshelving® Elements. Measuring 21"W x 60"L x 4-1/4"H, this kit includes one double level side rail and two double level end rails, along with the necessary side and end brackets for easy installation. Constructed from high-quality polypropylene in a soft gray finish, it provides reliable support and organization for your shelving needs, enhancing both functionality and aesthetics in any space.