Cisco ISR 4431 Rack Mount

PLEASE NOTE: No matter your filament, plastic will not be strong enough to support the full weight of the router in a rack. You should support your router with a shelf, and use these to keep it from sliding forward/backward in its space.

For printing, I recommend laying the model on its side, so the countersunk screw holes are pointed up. 

I've had good results using organic supports. You'll still get a workable result if you decide to turn off supports altogether. 

Modeled in FreeCAD. Included STL, STEP, and FCStd files for easy adaptation.