Thx for the input, appreciate it! Do you have some references to work with here? I can’t quite work out what you mean by vents - like something that leads directly outside? (this might be a language issue on my side, sorry) I never expected this to be on the level of an industrial unit, but my unit looks hardly worse than those cheap extractors you can find online (which of course does not mean that either is great). And I can’t quite justify spending multiple hundred euros on an industrial unit (even with health in mind)