

Specially adapted to work at low pressure, the GBP humidity sensitive exhaust unit is an ideal solution for the renovation of ventilation ductwork initially operating in natural ventilation. The GBP exhaust unit is available in several versions activated by a humidity sensitive sensor or by a pull cord, for implementation on collective or individual air ducts. Operating at pressures from about 15 to 30 Pa, it can be connected to a low-pressure exhaust fan or to a hybrid fan (VBP, VBP+). In addition to making it unnecessary to measure duct air-tightness, low-pressure operation offers the advantage of consuming considerably less energy than conventional mechanical exhaust ventilation, with quiet operation.
Humidity controlled or pull cord activated airflow.
Low-pressure solution optimised for energy performance, with many versions available for different types of housing and rooms.
Completely silent operation.
Suitable for individual or collective natural ventilation ducts using an adapter plate.
Easy cleaning: removable shutter box and front cover.
The GBP exhaust unit is available in several versions, with airflow controlled by a fully automatic humidity sensor or by pull cord. Constant airflow versions are also available.
Thanks to an adapter plate available as an accessory, the GBP exhaust unit fits easily over the holes of old ventilation exhaust units.
GBP ventilation exhaust unit | GBP h 10-42 | GBP h 20-55 | GBP c 10/30 | GBP 30 | GBP 15 | |
Standard code | GBP446 | GBP444 | GBP443 | GBP480 | GBP479 | |
Airflow characteristics | ||||||
Humidity sensitive | ■ | ■ | – | – | – | |
Boost airflow activated by pull cord* | – | – | ■ | – | – | |
Airflow (min.-max.) @ 15 Pa | m3/h | 10-42 | 20-55 | 10-30 | 30 | 15 |
Characteristics | ||||||
Colour | white | |||||
Material (main) | PS | |||||
Installation | ||||||
Connexion | bracket** | |||||
Air duct compatibility** | mm | on holes from l x h = [90 x 150] to l x h = [140 x 260] | ||||
Destination room | kitchen or bathroom | kitchen or bathroom | WC | WC | WC |
■: standard
* Boost airflow timer = 30 min
** Refurbishment may require a BAHIA BH Aldes plate according to dimensions of the hole
Note: other settings (airflow / relative humidity) exist – please contact us.