The file 'Mini Airflow Funnel 3D Printer Model' is (stl) file type, size is 2.1MB.
This funnel is the same as the original airflow funnel except scaled at 50% (and the wall thickness is 75% of the original to retain some rigidity). Prints fine without supports.
The funnel shown in the pictures was printed on my Printrbot Simple at 15 mm/sec without supports, white PLA @ 173 C.
Mini_Airflow_Funnel_mm.stl | 4.4MB |