This is a Filter enclosure for a Phrozen Mini 4k. You still have to place the printer in a ventialted area. But with the filter the smells are less. I also turned the Fan around. It was blowing Air into the machine. With the first test-print of 2,5 hours there wasn't a problem with the ventilation inside the machine. Plenty of air was still sucked into the machine from the side.
For the filter I used some Carbon fiber I had laying around for my soldering filter system. Choose whatever you think fits your needs.
You need four M3 Screws to fit the top plate. The housing is srewed to the chasis with the origanal screws for the cover and fan.