Tojo High-Stacker Shelf Insert. Large shelf compartments are not always utilized ideally, leading to wasted storage space. To better utilize the height in the impressive shelving system of the Swabian manufacturer, Dirk Frömchen has designed a clever insert that easily slides into a base or extension element of the shelf series. With six compartments each (22.8 x 16 cm, h 15.7 cm), this simply extended H-shape is perfect for organizing CDs or displaying collectible items. DVDs or paperback books can also be organized horizontally. Even cups and mugs, glasses, and bowls can be conveniently sorted when the shelf is used as an open dish cabinet in the kitchen. For those who want to maintain this organization throughout the entire shelf depth, two inserts can be combined back-to-back. In short, with this shelf insert for the optionally available Tojo High-Stacker shelving system, Dirk Frömchen skillfully expands the functionality in the home and office.