Normal flow (10Pa)24 m3/h
Acoustic damping "Dnew" closed position40 dB
Acoustic attenuation "Dnew" in the open position34 dB
Resistance to penetration of rainwater300 Pa



An aerodynamic aluminium sheet is responsible for the control, which, under the influence of the blown air, rises or falls, regulating the flow rate. It is this solution that ensures a constant stream, regardless of weather conditions.


Despite its small size, Ventair TRDn is distinguished by very good acoustic attenuation, up to 40 dB when closed. The controller also enables manual control. You can reduce or increase the airflow at any time, adjusting it to your needs. Its resistance to rainwater penetration is 300 Pa. Possible use in wooden and PVC joinery.