UPDATE: fixed fan guard model
UPDATE: made thicker, tweaked fan guard and added a version for BLTouch: https://www.thingiverse.com/thing:3782107
Lighter than the original metal fan duct with more focused airflow and mount for a fixed probe. Probe hole fits an TH3D EZABL.
The Blower Fan Duct comes in 3 height sizes. 8.6, 9 and 10mm. Let me know if you need something taller/shorter.
Print without support. Works with PLA, but I wouldn't risk it especially for the layer fan duct. I used PETG for the higher heat tolerance. The Fan Guard is fine in PLA.