Made of sheet steel covered with white epoxy paint, the BIR vents consist of a blowing cone, a central movable shut-off, a knob for adjusting the flow rate and a seal for maintaining and sealing. Range of use from 40 to 150 Pa.
The lip seal enables the assembly on a cuff or on a 100 or 150 mm long drywall 3-claw adapter sleeve.



We have a real identity that guides our actions on a daily basis and that irrigates our choices for more than 60 years now.
We are fully committed to keeping our promises to our clients and ‘Stakeholders’.
