Air Filter for 6 inch Duct fans - Canadian Well

thingiverse

I'm designing my own canadian well with buried 2inch PVC pipes, got a 6 inch duct fan so made this project by first creating a reduction that holds the fan (6 to 2 inches, fits fine a PVC pipe) and then created a filter for the top part that consist on 3 parts, the top is a lid that can be removed to change the activated carbon (get a kitchen filter or buy the activated carbon). The bottom part should be glued inside the filter. No supports needed, infill needed for the reduction, I used 10% and looks fine.