120mm Fan housing/Base for HEPA Air Filter Scrubber Tower

I loved the Design concept Duanelndeed created in the HEPA Air Filter Scrubber Tower, however after building it and setting it up, I was not satisfied with the amount of airflow it generated. and the output tube structure was in the way of my printer ( a TAZ 5 ) which itself takes up most of the front to back space in my enclosure. My solution was to create a new base and duct-work housing for a 120mm chassis fan. with the intent to blow the scrubbed air out the side of my enclosure. I