Ubbink 125mm Sound Attenuator airflow-cat-70 Zehnder CLD housing requires a

Zehnder CLD housing requires a front grille -  these are the  following options:

Displacement (nominal) 150 ltr/Min (5

MVHR/MEV ventilation runs and pipes for water supply

Galvanised steel

The white iCON 30S cover can also be changed so as to blend in better with the aesthetics of the room it is in

Ubbink 125mm Sound Attenuator airflow-cat-70 Zehnder CLD housing requires aIndoor sound is potentially a greater source of noise hindrance than outdoor sound as the insulation in buildings is improved. Mechanical ventilation units make sound, which may be experienced as noise hindrance, as they displace the air through the air distribution system. They emit sound by vibration and through the casing and the air distribution system. Sound is also generated as air travels through the air distribution system, including the