HEPA/Activated Carbon Filter

Update 12/28/2016: Everything is printed and fits! I ended up going with a different fan because I was worried about the CFM not being sufficient. I updated the link below. I have not built my case yet, so I have not been able to test the efficiency of this filter, but I assume it to be plenty to serve the task at hand. Make sure you download the new files I uploaded, I made a few tweaks before printing to make sure everything lined up.

I designed a bracket and enclosure for attaching a 120mm fan, activated carbon filter, and HEPA filter to a 3D printer case for filtering ABS fumes. I have been looking for a model that includes parts that can be sourced from Amazon and Home Depot, but have yet to come across one.

The following parts are what I am using:

Fan: https://www.amazon.com/gp/product/B009OWRMZ6/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Carbon Filter: https://www.amazon.com/gp/product/B000U204W2/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

HEPA Filter: https://ww