Thanks to the useful numbering cards made of cardbord, you will never lose track of your samples. Each storing position is marked by a number and can thus be easily identified. Just place the numbering card on the bottom of the cryo box, partition insert on top (9 x 9 or 10 x 10), and your samples are clearly arranged. Fits in each cryo box with the dimensions (W x D) 133 x 133 mm or 136 x 136 mm.