The invention concerns a box (100) to contain articles, intended to be stacked on a further box (200) of the same type. The box comprises a frame (1) substantially parallelepiped, having a bottom (2) and lateral walls (3.6) and is characterized in that at least two of said lateral walls are provided with blocking and sliding means (12-15, 16-18; 40-70) intended to work with further blocking and sliding means associated to the further box. The boxes can take on a first configuration wherein said means and said further means are mechanically coupled to stack the boxes, blocking sliding of the box into the further box or vice-versa, and a second configuration wherein said means and said further means are coupled to enable sliding of the box into the further box or vice-versa so as to insert one box into the other.