Deflecto retro style contract letter trays are designed to fit most executive offices. Designed with durability and style in mind each tray is made from high-impact polystyrene. These can be stacked for additional storage and are compatible with metal risers to give extra storage. (Risers not included)Can be used for a wide range of documents from a4 to foolscap with front panel tab for subject labelling. . Stackable. Compatible with metal risers (not included). Made from high-impact polystyrene