Ducts and dampers
Elbows, sleeves, clamps, short tubes, flow regulators and dampers.
They join the extractor to the vents. A damper opens, closes or limits the flow. A regulator holds the airflow.
Flexible or rigid tube?
Both, in short lengths. A long coil is not on this page.
Does a damper replace the extractor?
No. It only stops or limits the air. The extractor is what moves it.
Which diameters?
Household sizes: 80, 100, 125 and 150 mm, plus rectangular pieces for a false ceiling.