Alfawise U20-ONE Fan Mod - Airflow Optimization

This is a simple remix of the great fan mod for the Creality CR-10S by Gabriel3DCaster to adapt it to the Alfawise U20-ONE. I have adapted only the Fan_Mod_New_Version model.

Since U20-ONE is basically a clone of the CR-10S the original mod was already almost a perfect fit. It is actually possible to mount it as-is but you need longer screws than what's used on the original fan duct.

This mod just replaces the mount holes to be on the inside like on the original part.