Mobile upright roll file storage rack is perfect for storing most any type of rolled document such as blueprints, maps, drawings, etc. Great for storing and organizing blueprint and document tubes. Includes casters for easy movement around the office, studio, or shop. Consists of the following: 8 rows with 4" square slots = 40 openings total and optional sign. Overall size approx. 36"w x 28"h x 24"d. Ships flat; easy assembly required. Excellent storage and organization for our Alvin Ice Tubes. NOTE: Tubes shown in photo not included.