Exterior/interior ventilators for window frames
Kitchen, bathroom,and WC extraction
Airflow circuit components
Integrated airflowcontrol modules
Air intakes and outlets
Foul air outletroof components
Natural ventilation grilles
Exterior facadeair intake grilles
Made entirely from sheet steel with a white epoxy paint coating, BIR vents comprise an intake cone, an adjustable centre disc, a thumbwheel for adjusting the flow, and a lip seal to hold the unit in place and keep it airtight.
These vents incorporate a rubber seal that allows them to be fitted directly onto a flexible or rigid duct or onto a 3-claw drywall adapter, length 100 or 150 mm.
The graphs below show the flow-pressure curves for BIR vents. The figures at the top indicate the setting position R in mm.
The airlow is adjusted by screwing the thumbwheel in or out, which moves the centre disc in or out.