Alvin WRF40 wire bin roll file for rolled documents, blueprints, and storage tubes. Strong and sturdy, this tubular steel wire bin provides all the space you need for storing and organizing rolled documents, paper, plans, maps, and poster tubes. Great for blueprint storage, mailing tube organization, map storage. Features TWENTY 4" x 4" square openings. Alvin roll file also includes 4 locking casters, durable black powder-coated finish, and 3/8" diameter side tubes. Overall dimensions: 30" high x 22" wide x 18" deep. Includes easy, illustrated assembly instructions.