A distinctive feature of the SAS fan is the automatic shutters (Please allow 40 secounds to open and fully close).
This design is necessary to combat reverse traction and is indispensable for rooms where regular, but not constant ventilation is needed.
SAS is also has other options: timer & humidity sensor.
This will help the unit w
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Fan review
Arrived in pieces. Not very sturdy
R
Robert · June 18, 2025
Looks good . . . .
Neat, but not yet been able to instal it - house-move interrupted.