Combined and modified the fan bracket from Alan Wood with the exhaust duct from Getfar  and added additional duct and caps to add a filter to a Qidi X-Smart 3 printer.

Fans: https://www.amazon.com/gp/product/B07611PJ27
Filter: https://www.amazon.com/gp/product/B09W8GHPLS

M4 screws and coupler can be used to tighten the lid and base cap if desired. The base cap and duct can be glued together (these were seperated for ease of printing).