Tasteful design and function

I already have a "Not" -Heizlüfter this manufacturer (if the heating breaks down times etc.). Just as this also the cool air fan fulfilled my absolute standards of quality; let's face it - we are talking about a "plastic part" low technical "penetration" ...

But plastic is processed here super - the mechanics, including swivel mechanism - is very quiet; that the airflow - in principle - creates a certain sound level - is likely to be quite clear.
Wind without audible consequences - who expected that?
The ** ** technical noises are but - thanks to hardly existing imbalance - very low :)