Petsfang 4020 Radial fan adapter
thingiverse
Now that there's a petfang solution available for the CR-10S pro here: https://www.thingiverse.com/thing:3426936, I wanted to adapt the petfang duct to accept the factory 4020 radial fan because I didn't want to deal with attaching fans requiring different voltage support. I'm including the part that replaces the top of the original duct since the original petfang doesn't allow modifications to its original design. You'll need to cut the top off the original duct in your CAD software and merge this new part with it.
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