There are two fan shrouds, i have modified.

• DDX_Fan_Shroud_5015
  This is a mod from a non-v3 version into a v3 mount version. You need two M3x20 screws to mount the fan to the shroud and a M3 nut for the DDXv3 mount.
  
• DDX-V3_Fan_Shroud_5015
  The original version from Bondtech used to suck the air from the hotend side. This version has a rotated fan and will suck the air from the outer side.
  You need a M3x20 and a M3 screw insert (e.g from Ruthex) to mount the fan to the shroud and a M3 nut for the DDXv3 mount.

The original, non modified versions, can be found on bondtech.se (https://www.bondtech.se/customer-service/faq/?accordion=1#tab_stl-models)

I have uploaded a STEP file with both shrouds.