E3D 40mm fan mount with part fan mount

MAKE SURE TO MEASURE! Every printer is different! This thing fits MY printer great but yours might have a different nozzle height, different heater block orientation, etc.

Combined these two things:
http://www.thingiverse.com/thing:71073
http://www.thingiverse.com/thing:254004

So you can use this awesome part fan mount/duct with a 40mm fan.

I uploaded the original fan duct from the source. I did not edit it, I only uploaded it for convenience. I take no credit for its design.