This is a very functional and neat design for a fume extractor. The design is meant to fit a 60mm x 60mm x 25mm fan. I took the fan from a broken power supply and decided to put it to good use.
I included the .stp files in case you needed to adjust the design. I use an M2 bolts to secure the two parts together and allow for adjustability.
The author marked this model as their own original creation.