Demand controlled exhaust unit for low pressure ventilation Humidity controlled or pull cord activated airflow. The ideal solution to refurbish ventilation while keeping low-pressure operation Low-pressure solution optimised for energy performance, with many versions available for different types of housing and rooms. 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. Completely silent operation. Suitable for individual or collective natural ventilation ducts using an adapter plate. The ideal way to refurbish with low-pressure ventilation 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. Easy to adapt to individual or collective natural ventilation ducts Thanks to an adapter plate available as an accessory, the GBP exhaust unit fits easily over the holes of old ventilation exhaust units.

Demand controlled exhaust unit for low pressure ventilation Standard code Airflow characteristics Humidity sensitive Boost airflow activated by pull cord* Airflow (min.-max.) @ 15 Pa Characteristics Colour Material (main) Installation Connexion Duct compatibility** Destination room kitchen or bathroom kitchen or bathroom WC •boost airflow timer = 30 minutes ■ standard **refurbishment may require a BAHIA BH Aides according to dimensions of the hole Note: other settings (airflow/relative humidity) exist - please consult us.