- The Circular Flange System (CFS) is providing a higher stability to the circu-lar ducting networks, thanks to rigid connections of the ducts. This system reduces installation and assembly costs. The CFS is composed by a central connection peace and 2 circular flanges.
- It is tested in accordance with HVAC air leakage test procedures for Ductwork Jointings Systems DW/TM1 witnessed by BSRIA. All dimensions between 200-2000 mm are suitable for pressure classes A, B and C.