FLSun delta part cooling adapter for centrifugal fan

My 2017 FLSun delta came with a rather anemic centrifugal fan for the parts cooler. There are other adapters around (like https://www.thingiverse.com/thing:2369318 and https://www.thingiverse.com/thing:2477073), but they all use axial fans. I felt like a centrifugal fan was the better approach, so I designed yet another fan shroud myself.

This was designed for the 2017 "New effector", using a 4020 centrifugal blower:

https://www.aliexpress.com/item/Blower-cooling-Fan-40mmx40mmx20mm-DC-12V