Tubular Steel Wire Blueprint Roll File Organizer 12 Openings - Twelve 5½" x 5½" openings make this heavy-duty storage bin an ideal organizer for rolled maps, plans, drawings, and tubes. The four swivel casters give it high mobility. Constructed of black plastic-coated heavy-gauge steel rods. Overall dimensions: 30"h x 24"w x 18"d. Assembly required. Shipping weight 11 lbs.