A transverse fan (142) assembly (10), including for use with agricultural combine harvesters, which fan assembly (10) includes a supplementary air feed inlet (300) for the infill of air flow voids or deficiencies in the air flow pathway from the air inlet (64) of the transverse fan assembly (10) to the air inlet entryway (67) so as to effect a desired, generally more uniform, output air flow pattern across the entire expanse of the air outlet (66) of the transverse fan (142) assembly (10), and a method of use thereof.
