You can either print the nozzle in the far upper left or the one towards the right of your board. Both are where the bottom of the vac tube will connect to and ‘suck’ up your work. So you have the choice of either the nozzle in upper left or the full shoe looking guy to the far right.
I decided to print and go with his v4ish design i believe which is the one to the far right vs the nozzle in upper left of your board. I plan to put some door brush sweeps around the shoe and hopefully have it brush the workpiece while doing its thing. I may have to slightly modify it for my needs.