The 1860S Wire Shelf is designed to be used with the wire shelving posts. Split Sleeve The all welded shelf construction and under shelf truss supports, make this shelf tough and durable. National Sanitation Foundation approved. Genuine Quantum modular wire systems offer a unique combination of shelf and post sizes in a variety of finishes to compliment any application. The all welded shelf construction is supported with architectural wire trusses to provide between 600 to 800 lbs capacity per shelf.