Go ahead add some more! This unit attaches to existing Model 5291 Industrial Wire Shelving to form a continuous shelving unit for corner applications. Kit includes four shelves, two posts and snap-together clips. Strong welded wire construction. Shelves adjust in 1" increments and assemble in minutes without tools. Each shelf holds up to 1000 lbs. (with weight EVENly distributed). Available in Black or Metallic Gray powder coat finish.