The acoustic wall ventilation SHF installed on top of window are used for mechanical or natural ventilation systems.

• It guarantees a wall attenuation of 40 dB
• Generally associated with self-adjusting air-inlets of 22, 30 and 45 m³/h type M or with humidity-controlled air-inlets type ISOLA HY
• Can be fitted in all lining
• Entirely made in polystyrene

• Installed on the top of the joinery
• Test reports :  CETIAT n°21 14 236/2