Alvin WRF55 wire bin roll file cart. Strong, sturdy, tubular steel roll file provides extra storage space for all your rolled documents, paper, plans, maps, and tubes. Great for blueprint storage, mailing tube organization. Features 12 square openings (5.5" each) for extra-large storage requirements. Alvin vertical roll file also includes 4 locking casters, durable black powder-coated finish and 3/8" diameter side tubes. Overall dimensions: 30" high x 24" wide x 18" deep. Alvin tubular mobile upright roll file bins include easy, illustrated assembly instructions. Tubes pictured not included.