I was not comfortable with the huge hotend cover that comes with the machine, so I did a remix of the popular Mini Satsana fan duct for the T3, which aims to reduce unnecessary weight and size. There are things to be improved but this design works a lot better than the original one. It can be mounted using the original mount holes but for a stiffer setup y recommend to drill and tap two extra m3 holes, this can be made using the drilling guide included in the files. No supports are required.
The duct should be printed in ABS or PETG, however PLA may be fine temporarily. Supports aren't required, but using supports may improve print quality. More walls/perimeters and and higher infill should be used for the BLTouch mount for more rigidity.
Use the included .step file if there's something you're missing. Consider uploading your remix for others to use.
The author remixed this model.
Modified the mounting points and hotend cavity geometry to suit the sunlu t3 hotend, added mounting points to put cameras or accesories using threaded inserts.