Tojo Hochstapler shelving system. This high-stacker by Dirk Frömchen for Tojo Möbel lives up to its unassuming name, as it is a (nearly) infinitely expandable system for storing books, files, and display items in a brilliantly simple way. And all this without screws, drilling, or other tedious DIY tasks. For vertical stacking, primarily extension elements are used – two side panels with a shelf. The upper finish is provided by the cuboid base element with a bottom and a smoothly closing top. The distinctly milled sides give the shelf a unique appearance, but they primarily serve to stabilize the loosely stacked individual elements. The bottom of an element is secured in such a way that it prevents lateral shifting of the element placed on top. Extension element with doors. For those who prefer to stack a shelf or freestanding room divider with a closed front, thus avoiding the sight of too many items, this elegant variant is the perfect choice, featuring two doors that can be opened using milled handles.