Add more shelves or replace worn or fatigued shelves on your boltless shelving with extra shelves for bulk boltless shelving units. Our popular heavy duty boltless shelving design provides for easy assembly without nuts, bolts or shelf clips. Achieve more accessibility with the same strength thanks to a design that doesn't require cross braces. Shelves are available in a number of sizes to match your current boltless shelving unit . Extra shelves are constructed of durable wire mesh decking. Decks are made from 6 gauge (4.5mm) wire.  Wire grid openings are 2" x 4".  Steel frame color: dark gray. Wire mesh color: silver.