Printed in Polyplus PLA at 210/60 C with 20% infill using a WanHao Duplicator i3.
Now, which Raspberry Pi did you say it fitted? The cutouts and mountings are not quite optimal for the three different models that I have tested.
I have a lot of different boards that I would like to put in a rack. Would you be willing to share the "source code" for the design? Also, I am a bit concerned about cooling. How about matching vents on top and bottom so the whole rack could be force cooled from above or below using a small fan?