Desiccant Box

These are two part desiccant boxes with perforations on all six sides. There are 4"x4"x1" and 3"x3"x1" versions. When fitted together, the perforations on the four sides align for optimal air flow. Small tabs lock the pieces together, but do not prevent easy separation if required.

These were done in TinkerCad.
The 4x4x1 version: https://www.tinkercad.com/things/6ahNs0Nl9S6
The 3x3x1 version: https://www.tinkercad.com/things/0dQooKQkrfc