Noctua NF A20 Fan Duct

Taking inspiration from: https://www.printables.com/model/268401-noctua-desk-fan

But re-modelled for the A20 (200mm Fan)
 

You can either print with the fan arm “plugs”, or if you skip the first 2mm, you can skip those plugs and print without supports

The purpose of this print is to accelerate the air from the fan forwards, pulling in other non-fan-related air (venturi effect)

See here for more information: 

https://imgur.com/a/ZMpN4P3

If you would like to remix this model, or sell the model (file or print); please contact me for more details