The ISO System 216 sideboard by Invisible City was designed for one specific purpose. It stores paper. And it does it well. All drawers and cupboards are sized according to ISO international paper standard (A4, A3, A2 etc.). You can customize your piece too, depending on your paper-storing needs. Even though this concept does not offer you endless capacity (which is a myth anyway), it gives you the best possible solution for a specific task. And that is no small feat.