I've made a version with a port for ventilation system for Elegoo Centauri Carbon printers which are placed next to the wall and therefore need an outlet at a 90* angle. Vent hose is 82 mm in diamiter which you can easily find at Aliexprees (I think they are selling it labeled at 80 mm in diamiter.). It needs the same amount of space as a poop bin delivered by Elegoo.
I hope you'll find it usefull!
The author remixed this model.
90* angle for a ventilation outlet. No HEPA Filter mount.