Window Acoustic Trickle Ventilator Sonovent

Adjustable flap aluminium ventilator with acoustic attenuation, for glazing-in to windows, overframe or wall mounting.
- Enables secure, weather resistant ventilation with exclusion of insects. Choice of unit size. Choice of slot size. Equivalent area: 14,427 34,032 mm /m. Five intermediate settings.
- Choice of top or bottom mating profile to secure edge of glazing unit or for retention by glazing bar. Choice of mating profiles to suit equivalent glazing unit thickness.
- Projecting outer profile with weathered lip to opening.
- Projecting inner profile with slotted fascia. Removable for maintenance.
- Internal acoustic absorbent lining.
- Aluminium profiles with plastic end caps. Made to measure.
- Self regulating, class P3. Incorporates secondary flap which closes as external wind speed rises.
- Suitable for aluminium, PVC-U, wood or composite frames.
- Watertight in closed position to wind pressure 650 Pa.
- Windtight in closed position to wind pressure 650 Pa.
- Thermally broken.
- Choice of manual, cord or rod operation.
- Unit width (maximum): 2 m. Made to measure.
- Acoustic attenuation depending on model (open): 37 56 dB, to EN ISO 140 and EN ISO 717.
- Visually matching, mechanically aided model Sonovent V Small also available.