10" patch panel for up to 12 numbered keystone modules.
This patch panel has is ⅔ U, i.e. 30mm instead of the standard unit width of 44.45mm.

Printable without support!

The hexagonal ventilation panel in the picture is not part of this model but can instead be found here: 10 inch rack 1/3 U ventilation panel

The number and dimensions of the keystone modules can be changed by modifying their corresponding variables in the OpenSCAD file.
Similarily, the font, size, depth and padding of the numbering can also be modified via variables.
At the time of writing, you need the experimental build and the “lazy-union” feature enabled in the settings to be able to generate multi-part 3MF files. Otherwise you can also generate one STL file per object by commenting out either the patch_panel() or the numbers() line at the end of the OpenSCAD file.