WithPerfoFlow™ the air exits the duct via laser cut perforations along the circumference of the duct.

The perforations can cover between 90° and 360° of the duct’s circumference.

The size of the near zone depends on the static pressure inside the duct, the percentage of the circumference that is perforated, and the size and spacing of the perforations.  

Data sheet

Near zoneUp to 6,400 mm [21']"]
SurfacePerforations 3,0-14,0 mm [0.12-0.55"] diameter