Fractal Design Node 202 + Asrock X470 Fatal1ty + NH-L9 fan shroud
Fan shroud for the Fractal Design Node 202 case with the Asrock X470 Fatal1ty mainboard and NH-L9 cooler. The problem is that (depending on case orientation) the fan is not sucking fresh air from the ventilation opening, but instead using the already hot air coming from the GPU. This alleviates the problem.
You can use the FreeCAD source file to make modifications.