I made a vent fitting for the TopCube 3D Printer enclosure I use with one of my printers. I primarily use the enclosure to keep dust off my machine and I leave the zipper open for ventilation. I wanted to vent it out my existing ventilation system I have setup with another printer.
This fits directly into the side opening. I didnt put the holes into the flange just incase the holes on mine dont exactly line up with all of them. You can use a marker to mark exactly where the holes are and drill it out if desired.
This should work with a 3" vent hose. you will have to tighten it down with a hose clamp. I didnt want to cut the enclosure, this way if someone else uses it they dont have to either.
Here is a link to the enclosure on Amazon:
https://www.amazon.com/dp/B0DDWQH82L?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1&th=1
The author marked this model as their own original creation.