Kossel 2020 50mm Base Fan Adapter

I wanted to add a cooling fan to the outside of the base of my FolgerTech Kossel 2020. A 50mm fan is a good fit for that as it aligns with the extrusion slots for easy mounting. The sides of the base is made of 2 2020 elements with a 20mm vertical displacement.
The only problem with mounting the fan directly to the extrusions is that most of the fan output is blowing straight at the upper and lower 2020 element.
So I created a funnel-like adapter for a 50mm fan that would collect the air and