AerAtron FR3-43 Manual De Instalación página 20

"As much as we sould like to take full credit for the desich
of your Aeratron fan, we need to admit, we weren' t the first
to think of it.
The profile of the Aeratron blade and the winglet at its end
reduce turbulence, providing more airflow with less energy,
siletly. Great idea."