BQ Prusa i3 Hephestos auto bed leveling probe mount.

So the thing with the fan duct mounted probes is, that there in my opinion are way to inaccurate since there only fixed with one screw. and when you work on the printer it can happend that the fan duct based mounts rotates just a little bit and you have to re calibrate the probe.

this probe mount is mounted behind the filament cooling fan with 2 screws from the fan itself.