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This is an updated version of my popular fan duct for the stock  Ender 3 that's designed for a larger 5015 filament cooling fan.
Here's a link to my original design.https://www.thingiverse.com/thing:4369859
Like my original version this is also designed to be printed easily without supports. Although, at least on my printer I find a brim is required to keep the small cable cap, and wall between the cables and hotend from warping away from the bed.

Here's an overviews of some of the updates I've made in this design.
5015 Fan support
Obviously as mentioned above this is designed for 5015 style blower fan. You'll also need two M4x20 screws to attach the fan. Personally I'm using this WINSINN fan from  Amazon.
https://www.amazon.com/gp/product/B07DB7DLMM/
I think any 5015 should work, but if you have problems getting yours to fit please let me know in the comments below.

Ender 5 Support
On the  Ender 5 the ends of the X axis belt protrude from the front of the hotend carriage mounting plate. This conflicted with…