Space-saving storage bins, in 5 sizes, hold 8 - 50 rolled documents Mobile roll files are constructed of vinyl-covered, sturdy wood grain particleboard to hold rolled documents such as maps and blueprints. Bins are designed in a "grandstand" formation for maximum document capacity with a minimum footprint. For easy mobility, 2 1/2" diameter casters allow bins to be moved from desk side to storage space with little effort. Choose from 5 slot configurations: 8, 12, 20, 21, or 50 Assembly required. Ships via Ground Transportation. FOB: MN Available in putty color. Overall dimensions: SF3045: 28 3/4H x 30W x 15 3/4"D, with 8 slots, each 7"W SF3042: 23 1/2H x 15 1/4W x 13"D, with 12 slots each 3 3/8"W SF3082: 23 1/2H x 15W 1/4W x 13"D, with 20 slots, each 3 2/4"W SF3043: 28 3/4H x 30W x 15 3/4"D, with 21 slots, each 3 3/4"W SF3083: 28 3/4H x 30W x 15 3/4"D, with 50 slots, each 2 3/4"W