Bookshelf File Cabinet Combo. Mechanical system actually allows for individual shelves for the Mobile Filing Cabinets to be pulled out (think about actually pulling a book out of the bookshelf instead of moving it from side to side). This type of system needs a lot more space than the first type of system and requires a far more complex tracking system to avoid the mobile cabinets from going the wrong way. As you can imagine, this is a more expensive system since it requires more tracks and much more space. Bookshelf file cabinet combo, bookcase file cabinet combination.
See also: Staples File Cabinets 4 Drawer
Bookshelf File Cabinet Combo Gallery