Ender-3 Vent Ring with Windshield

I think that my Ender-3 extruder has some unoptimized parasite airflow, generated by frontal, always turned on, fan cooler. It's turbulences partly moved down on the printed thing, and that can be a reason of undesired thermal effects. This is especialy important when you are using ABS, because it's very sensitive to undesired air flow.

This thing should be printed from ABS or some other heat resistant plastic. PLA is not suitable, because it will be melted and soften during usage as wind shield for high temperature ABS-printing.

Thanx to Filboyt, who is the author of the original idea of vent ring for Ender-3. That is a great idea!