I intend this design to evolve over time, so if this is more than a few months old, there's probably better options available. There is also limited documentation because i'm lazy :(
Right duct for the ender v3 se
Needs 1x m3x8, 1x m3x20
the silencer is a poorly printed https://www.printables.com/model/340009-5015-fan-silencer

The author marked this model as their own original creation.