The acoustic air-inlets  ISOLA HY are used for humidity-controlled ventilation systems type B (Sytème ALIZÉ III - Atech n°14/07-1194).

• Variable air-flow between 6 and 45 m³/h regarding the humidity level of the room for a pressure of 20 Pa
• Guarantee a wall attenuation of 30 dB
  - Group ESA4 (Dn,e,w + Ctr ≥ 36 dB)
  - Group ESA5 (Dn,e,w+ Ctr ≥ 39 dB) pour ISOLA HY RA (with acoustic extension)
• Associated with an outer cover CE2A
• Made in white polystyrene or on request  in the following colours :

  Bronze             Light oak        Dark oak         Grey              Ivory              Brown          Black

• Suitable on vertical walls and on all leaning plans
• Installed on 354 x 12 mm holes.