Could be used individually or couldbe stacked on each other with risers (Art No. 1717). Has generous clearance area to facilitate access and space for labelling. Inside dimensions 368 mm x 251 mm x68 mm. Risers enhance clearance height between trays by 70 mm. 4 pieces of a single colour trays packedwith risers in one carton. Colours: Beige, Light Grey, Dark Grey, Brown, Black, Red, Blue, Yellow & Green.