Radialventilator, Einzelbild
<a href="//commons.wikimedia.org/wiki/User:EagleX" title="User:EagleX">EagleX</a>
CC BY 3.0
<a class="external free" href="https://commons.wikimedia.org/wiki/File:Centrifugal_fan.gif">https://commons.wikimedia.org/wiki/File:Centrifugal_fan.gif</a>