Mobile upright roll file storage bin, blueprint organizer. Organize your office, studio, or drafting room quickly and economically. Portable reference/storage rack is 28" high x 24.5" wide x 17" deep. Constructed of white plastic-coated heavy-gauge wire. Each of the 24 openings is 3-5/8" x 4" and will accommodate up to a 3.5" diameter tube. Includes 4 casters. Great for blueprint storage, mailing tube organization. Includes illustrated assembly instructions. Alvin WTF35 mobile wire upright roll file.