Generously sized and stylish, these OSCO letter trays made from thick, clear high grade acrylic and are large enough to hold foolscap as well as A4 size documents. Stackable. Each pair of trays comes supplied with extra risers so that you can buy another set of two trays and create a stack of four. Assembled Measurements of combined two trays : H 152 x W 254 x D 354 mm. Internal tray size : H 52 x W 235 x D 334 mm. Weight : 1.32 Kgs.