Please refer to this model for more info and assembly details.
This model is compatible with the standard Satsana fan duct as well as this bltouch version.
The author remixed this model.
Satsana fan duct = reference
Ender 3 Satsana Fan Duct (More Airflow Mod) = what I use
Parametric Lever Wire Mount (Ender 3, Quick Tool Change) = original model that this was based on.