This is a set of 21 Manila folders (Manila files). Unlike the thick cardboard of individual folders made by domestic manufacturers, these are made of a thin, durable, and flexible material, making them ideal for filing. They are US letter size (29.5 cm wide: 21 cm long), so they are almost exactly A4 size. For sale is a set of 21 folders: (left tab, center tab) x 9, right tab x 3. 4 seconds ago