Despite being called "Vertical" it is very easy to switch these to be Horizontal. I measured the size of the deck in millimeters and then 6mm to both length and width to account for the walls and add a little wiggle room.
While this is awesome and allows for multiple rows/columns, it doesn't allow for variable sizes in those. All rows/columns would be the same size. That said, I exported each of the bays independently and then just put them together in PrusaSlicer so it printed as one unit.
Since all dimensions can be altered and the hole size changed as well, you can pretty much get whatever you want. Very happy. Also, because of my purpose, I printed these fast as I didn't care about quality, so don't mind the wisps on my print, that's on me, not the design!
