After 8months i realized (by other models) that my set was incomplete. First try was unsuccessful (slicing the original hexagonal boxes) because it was too fat to enter. I've narrowed the backpart to the front by 5mm. It fits well.

THIS IS A PART of a COMPLETE SET.

Other pieces here:

   Hexagonal AMS Drybox with Windows

soon a funnel to load silica beads, and the back oval boxes (one piece).