Sandusky Lee BM30361852-05 Dove Gray Steel Mobile Book Case, 3 Adjustable Shelves, 58" Height x 36" Width x 18" Depth Welded steel mobile bookcase has three adjustable shelves and swivel casters and is suitable for organizing, storing, and transporting books, reference materials, binders, and other office materials Shelves adjust in 1" increments to accommodate height of books and other materials Four 6" polypropylene swivel casters with 5" wheels and locking brakes on two of the casters for maneuverability and safe handling Powder coat finish to resist chipping and corrosion Some assembly required, instructions included, tools for assembly sold separately