White plastic valves used in extraction or blowing and in single flow or double flow VMC installations.
When blowing, the direction and the distance of the airflow can be adjusted.
BDOP model includes a BDO + a connexion sleeve with anchors to mount on plasterboard.
It can be fitted with an airflow regulator on the sleeve (BDOP 80 and 125 models) or on the ducting (100, 160 and 200 BDO models).