Ideal for spine-out storage of books or videocassettes, with "library quiet" performanceRuggedly constructed from commercial grade cold rolled steel, with heavy-duty 16-gauge, 1" round tube steel frames. Components are precisely made to eliminate any sharp edges. Curved handles provide comfort.Includes 2 tiers with a total of four 6 3/4"D sloped shelves. For quiet operation, undersides of the shelves are covered with sound-absorbing acoustic material. Shelf clearance is 12". Includes 4 ball-bearing swivel casters to assure easy, quiet mobility, and curved handles for clearance and better steering.Choose from 4" or 5", non-locking or locking:84: 4" non-locking casters 84C: 5" non-locking casters84LC: 4" locking casters84CLC: 5" locking castersShips via Ground Transportation. FOB: ILCaster assembly required.Handle grips (keyword: handle pads), available and sold separately, are made of padded foam provide comfortable, non-slip cushioning. Optional book truck bumpers (keyword: bumpers) slip onto legs above the casters to prevent trucks from bumping against furniture or walls. Finished with durable baked enamel paint available in 9 colors: -01 black, -02 blue, -08 desert sand, -18 red, -48 putty, -53 burgundy, -55 navy, -94 medium grey, -134 dark green To view finish choices, simply click on View Swatches located above.Overall dimensions:84 and 84LC: 36H x 30W x 17"D84C and 84CLC: 37H x 30W x 17"D