- Manufactured from corrosion resistant galvanised steel as standard
- Air flow regulator and measuring device for circular ducts
- Accurate control, smooth and quiet air flow
- Reliable measuring results achieved by special iris construction
- Easily readable scale assists quick and simple adjustment
- Allows for easy cleaning of the ductwork system
- Suitable for continuous use from -10°C up to +80°C
- For best results install in straight runs of ductwork




