Horizontal plan cabinet a traditional plan chest suited to paper sizes a1 to ao. available in either 5 or 10 drawer models, horizontal plan cabinets are suitable for storing thick or fragile items or situations where attaching an adhesive strip is not appropriate.. Planex vertical plan filing cabinets are powdercoat finished, high performance cabinets providing a means of safely storing a large number of plans vertically using minimal floor space.. Planex vertical plan cabinet - a0 size. pre-owned
