Taurus v5 Space saver mod E3S1Pro

Assembly

What to purchase:
2x 5015 24v fans
The 5020s should work on this interface (not tested), are not as efficient, but also not as noisy. 

3x M3x5 screws
2x M4x20 screws

The M4 screws go through the top holes to mount the fans. Screw them in while applying a little pressure, they cut their own threads and should end up moderately snug.

• Wire the two fans in parallel, you can cut the end off your original fan so you don't have to purchase the little plug (there's a picture included to show what the splicing should look like using heat shrink tubes).
   

BEWARE: The colors (red/black) on this product were reversed for me, so make sure you compare the original fan plug to what you get and wire accordingly. The included picture shows the aftermarket plug (black wire on top, reversed). If using the end of the stock fan, the red wire should be on top. If still not sure, measure it - using a voltmeter.

Adjustments

As with the original K3D duct, this version has slotted mounts so you can move it up or down by a little. If you look at the renderings, it was designed to sit about 3/4 up in the mounting slots and that is where it should be.
The design is such, that the bottom of the cooling nozzle tips should be ~1mm higher than bottom of the hot-end extruder nozzle, so that even on "dirty" prints - it will hopefully not scrape across the top of your print, worst case: Catch and knock over your part.
You can eyeball this, there isn't really a right or wrong way to adjust it, just go with what you feel is best for your build.

Update here (06/21/2023): Some are running custom hot ends, which asks for more adjustment space, so we elongated the mounting bosses by 2mm up and down for more flexibility. A custom spacer/washer is also provided in case you lost the original hardware.