A very versatile sorting solution with fixed shelves and room for plenty of paper and documents. Place the unit directly on your desk so you always have important documents and paper close at hand, use it inside a bookcase or cabinet to keep things organised, or stand it next to the printer and use it for sorting printouts, different types of paper, envelopes, etc. Alternatively, why not label each compartment and use the tray as a small mail sorting unit?
The pigeon holes are stackable and you can easily extend the height of the unit simply by stacking them on top of each other so that, without having to use any tools, you can create a sorting solution that meets your needs!