The GOLD SD can be used as a supply air or an extract air handling unit. If both supply air and extract air handling units are used in a ventilation system, the supply air unit is equipped with a control unit, but not the extract air unit. A communication cable is used to connect both air handling units to one another making it possible to control both units. Filter holders for pleated filters are in the fan section. Set of filters with pleated medium, pressure sensor, hoses and communication cable are optional extras.
