140mm PC Fan Carbon Filter Adapter

I got a new Nukit Tempest Pro Air Purifier Kit and wanted to test some carbon filtering capabilities. The kit uses 140mm PC fans.

Filter Used
Amazon.com: Amazinpure 5.5" Carbon Filter compatible with CF-A for SNDOAS Under Cabinet Range Hood Model GF23 TF23 Round Filter Charcoal Vent Filter 140 x 25 mm : Appliances

Used 10mm Bolt and Nut From Jensa @Jensa_275720
https://www.printables.com/model/206552-10mm-bolt
https://www.printables.com/model/206551-10mm-nut