Superb plastic cell storage boxes to store, transport or even display your specimens and collection. These boxes are manufactured for us from thick, compressed card board which is robust and sturdy, the boxes do not warp, even with samples inside them (they are the very same boxes we supply our 20 specimen sets in). The base has a white lining with a shining coat where as the lid has an eye catching royal blue marble effect pattern. Inside, the base contains a plastic 20 cell insert, each cell measures 55 x 55 mm and has a 4 mm fill between them to each side. They have been glued in, ensuring they will not move, where as the cells will act as excellent spaces to divide your samples up and stop them from damaging each other. The overall dimensions of the lid is 303 x 246 x 53 mm where as the box it's self (without the lid) measures 298 x 240 x 49 mm. In all, a great, strong, sturdy box for the easy storage or display of your rock, minerals, fossils or gemstones.