thingiverse
This customizer generates patch panels for keystone jacks. Those are the modular jacks you can get all over the place.
This is a cleaned up version of the keystone mounting jack by jsadusk. I've changed it so you can make patch panels with an arbitrary number of rows and columns. You can also adjust the amount of spacing between the jacks and change the mounting hole size.
UPDATE: I modified the padding parameter so you can separately adjust the width and height spacing
Note
If you take a look at the code, you can also turn off the side mounting brackets or prevent the front "soffits" from being drawn. With no soffits, it doesn't look as nice but it's easier to pop the module out from the front with a screwdriver. I would've added these options as check boxes but the thingiverse customizer doesn't seem to handle boolean values.
Direct link to the original creator's page
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, this model is available as a free download on thingiverse. Some creators accept tips or donations.
Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.