Alvin WSF36 wire bin roll file helps arrange maps, plans, and drawings for easy access. Great for blueprint storage and document tube organization. Has 24 shelf openings 3-1/8" x 3-1/8" with unique "step" design base. Constructed of white plastic-coated heavy-gauge wire. Four swivel casters provide easy mobility. Overall dimensions: 32" high x 21" wide x 14" deep. Includes easy, illustrated assembly instructions.