120mm PC fan ducts
thingiverse
These are ducts that I needed so my 120mm fans would suck air from the side panel of my Thermaltake View 51 ARGB case without a radiator in place, but can be scaled in length to fit other applications. They match Ezdiy-Fab argb pwm 120mm fans, but the hole pattern is standard for all 120mm PC fans. I have the thick version installed on top and bottom, with a thin in the center. There doesn't seem to be much functional difference between them.
Download Model from thingiverse
With this file you will be able to print 120mm PC fan ducts with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 120mm PC fan ducts.