Inline Duct Fan

I designed this as a booster fan to put in-line with my bitcoin miner exhaust setup so the primary fans don't have to work as hard, hopefully taking the noise level down a bit.

Designed to work with 3 inch flexible ducting from Home Depot or similar, and the piece that mounts on the 120mm fan on my Antminer S9 is here: https://www.thingiverse.com/thing:3630788

Before printing, make sure your printer is somewhat dimensionally accurate because the 60mm by 38mm fan is press-fit. It is just a