I designed this case to be a standalone setup. it has spots for 2, 80x80mm, pc fans such as the Noctua nf-a8. I incorporated several tie down spots for cable management and 20mm holes to rout the cables in and out.
I have proved the fision360 and step files for easy modification.
Note: in the Mesh files there is a slight offset (1mm) on the standoff posts positioning to account for the slight shrinkage of the PETG filament I use. Modify the cad if you do not want this adjustment or if your filament choice does not shrink.
The author hasn't provided the model origin yet.