This mobile steel bookcase from OfficeSource® is a perfect solution for people who love to rearrange their office interior periodically. The fully adjustable shelves adjust on 1'' centers. This bookcase comes with heavy duty patented swivel casters, 2 of which are locking. This bookcase has open shelves with ample storage space that you can use to store your books. It has been designed to enhance the interior decor of the room it is in, and keep your valuables safe. This bookcase comes with two adjustable shelves and one fixed shelf, and is shipped assembled, except for casters. The height listed does not include the casters; please add 6 inches for total height.