RigidBot Right-Side Cooling Fan Mount
This helps to keep the cooling fan out of the way and keeps the extruder easy to work on. The duct has a small divot at the exit to help blow the air down rather than straight out.
Use 3mm bolts to hold the fan onto the bracket and securely fasten the duct to the fan.
The pictures do not show it well, but there is a significant enough gap to keep the fan duct away from the hot parts.