This is a nozzle part fan duct that has more “ground clearance” than the original fan duct. Also, air flow has been more concentrated to the Nozzle tip.
This is a drop in replacement for the original fan duct supplied by Sovol.
I printed this standing on one side with no supports and with ABS+ to have better temperature resistance since it is close to the nozzle.
The author marked this model as their own original creation.