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

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

The IP rating is 22

ComfoAir CCBL 3 position switch with service indicator

Zehnder ComfoAir 155WM-GB (also know as Greenwood Vireo HR155WM) is the latest Heat Recovery Unit suitable for apartments and small houses - compact wall-mounted unit with capacity for properties up to 125m2 it can easily be installed in a kitchen cupboard

Galvanised steel

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