Fan shroud v3 for BI2.5

Fan shroud for BI2.5, long and narrow to blow air at the tip of the extruder.
Watch for your extruder lenght as it might hit the ground or the part during printing.
Install using the 2 empty holes of both fan of the BI 2.5 and M4 plastite screw. You can also use M4 machine screw and nut.