I adapted this model because the @tellus1019 and @Alexík model are very good but not for x1c and I couldn't find any fan duct for my x1c and the original one is fine but it needed to be improved.

@tellus1019 and @Alexík have maked a great job and this is why i use their model as a base for build a x1c compatible model.
don't hesitate to give me your suggestions to adapt if needed.
I tested if the fan duct would interfere with the lidar and I modified the shape of the fan duct so that the lidar would not be influenced.
you can use 2 magnets of 3x2mm.

Don't forget to do a calibration process after mounting this fan duct.

I advise you to print this duct in black or in a not clear color, i ve see it make a difference whenb lidar or camera do his process … i don't know how it works exactly but the difference is here.

update 30 january 2024:

I changed the thickness of the chamfer wall on one of the nozzles to avoid interpretation problems with the slicer and walls that are too thin.