This is the Banshee Fan Vent. It is designed to to be a direct replacement for the stock Ender 3 Pro vent. It is designed to simulate the effect created by the large "Bullseye" vent yet be easier to make and install. There are 2 versions available now the original which fits my ender 3 pro and a shortened one designed to raise the vent up 1.5 MM. I have made mine out of PLA- but recommend ABS or PETG for higher temp printing and times.I have not tested the the second version as I am moving my machine ATM please post results in the comments or improvements needed and it will be done.

During installation be sure to loosen All the fan screws and the 2 fan housing screws so you can adjust the positioning of the Banshee to your liking see picture above.

https://www.youtube.com/watch?v=FNZeKukvkRI&lc=UgzxvjiPgayRN0O9DpN4AaABAg