Diaphragm flow control damper IRIS used for adjusting and measuring airflow in ventilation systems.
Execution diameter: Ø 125 mm
Designed for direct installation in ductwork, especially round ducts.
Unlike traditional throttle or blade dampers, this design operates on the principle of a diaphragm – the cross-sectional area of the air decreases or increases uniformly in a circular shape.
Advantages and Application
- More stable airflow.
- High accuracy in airflow regulation — the damper allows you to precisely set the required volumes of air.
- Suitable for balancing ventilation systems so that supply and exhaust air are balanced.
- Ability to integrate into various ductwork systems due to different diameters.
- Reduced noise level in the ductwork.

Spatula for stretch ceiling installation (SS34)
Recessed Fixture GU10 (SL40)
Recessed Fixture Mirror Square Black GX53 (SL87)
CS 320 Color Satin
PVC Profile Separator (PS1)
Perforated Tape 12x0.7 mm (PT1)
Spatula for stretch ceiling installation (SS32)
Würth Universal Cleaning Spray 500 ml (W68)
Spatula for stretch ceiling installation (SS4)
Recessed Fixture lamp Violetta 2 GU10 (SL56)
Recessed Fixture Filomena Black GU10 (SL61)
Spatula for stretch ceiling installation (SS12)
Single-Row Curtain Rail U-Profiles 150 cm (U15)
Aluminum profile for stretch ceiling Separator (AS1)
Spatula for stretch ceiling installation (SS3)
8262 PILLS V Black NOWODVORSKI
7666 EYE TONE III
Recessed Fixture Sandra GU10 (SL35)
Recessed luminaire Round NEXTEC 16W 4000К 1440 lm (SL91)
Masking tape White (L)
Recessed Fixture Jana GX53 (SL1)
Spatula for stretch ceiling installation (SS2)
Masking tape White (FL) 















