Structure and compartments: Impact-resistant ultra-resistant polystyrene. Starting element 10-name tag compartments (person, department, ...) usable dimensions of the compartment: H 29.5 x W 10 cm, thickness 1 cm, visible edge 9 cm. 20 A4 format compartments, usable dimensions of the compartment: H 29.5 x W 23.4 cm, thickness 1 cm, visible edge 9 cm. 1 spare compartment, usable dimensions of the compartment: H 29.5 x W 57 cm, thickness 2 cm.