I also think that 2 looks the most “Boundlessly” 
2&8/11 have the best design imo.
Is the extractor not part of the machine system? Because I don´t see any joints for the pipes from your first post on most of them.
I also think that 2 looks the most “Boundlessly”
2&8/11 have the best design imo.
Is the extractor not part of the machine system? Because I don´t see any joints for the pipes from your first post on most of them.