The EAQ42W is one of the best performing acoustic window ventilators available in the UK. The ventilator provides outstanding Dn,e,w 42dB(A) for areas with high external noise transmission, those likely in PPG4 categories B, C and D.

This acoustic vent has been designed with upward air deflection to eliminate replacement air causing draughts.

Manual Control for Occupants
For compliance with Building Regulations the homeowner/occupant must be able to operate the ventilation device to ensure comfort in
the home. The EAQ42W design includes a manual override control with two settings:
0 : Closed – providing minimal airfl ow
1 : Open – maximum airflow opening

Acoustic Performance for the greenwood acoustic vent:
Dn,e,w 42dB(A)
Dn,e,w (C) 42dB
Dn,e,w (Ctr) 42dB

All in Open Position:
DN,e,w: Average weighted performance across frequency range
C: Pink Noise
Ctr: Road Noise
Full specification detail and test reports are available on request.

Closed Position:
Dn,e,w 45dB (A)