This is a remix of the powerstrip mounting solution by symbadisch, from Thingiverse.
Thanks for the great model.
I have adapted the model so that supports are no longer necessary.
I also removed superfluous material that is not absolutely necessary for the strength of the part.
Finally, I redesigned the model to use countersunk screws. A screw with a diameter of 4.5 should fit perfectly.
I printed the part with the following settings:
Wall thickness: 0,8mm
Infill: 20%
Resolution: 0,2mm
Material: PLA
Supports: No
Brim: Yes, for safety
The author hasn't provided the model origin yet.