This design is a box with a lid that latches. The lid attaches with a filament hinge.
The overall dimensions are driven by the number of rows and columns of compartments and their size. The Fusion 360 design is parametric.
This model is based on 20 cells (4x5). The left side has 12 (3x4) and the right side has 4 (2 doubles by 2).
The author marked this model as their own original creation.