CR120 - Optimised circular fire damper up to 120'

Optimised circular fire damper with a fire resistance up to 120 minutes, available in small diameters (starting from 100 mm). A minimal pressure loss is guaranteed thanks to the thin blade, the fusible link aligned with the blade, and the transmission located outside the tunnel.


  • Easy to install
  • Optimal free air passage and minimal pressure loss
  • Optimal acoustic performance
  • Higher net building volume through compact size
  • Air-tightness class ATC 3 according to EN1751 (formerly C)


  • Suitable for built-in installation
  • Suitable for installation remote from the wall
  • Minimal distance allowed
  • Suitable for installation in rigid wall, rigid floor, flexible wall and flexible shaft wall (metal stud gypsum plasterboard wall)
  • Sealing with fire resistant stone wool boards allowed, also for asymmetric opening
  • Tested according to EN 1366-2 up to 500 Pa
  • Operating mechanism outside the wall
  • Maintenance-free
  • For indoor use
  • Operating temperature: max. 50°C


  1. Casing in galvanised steel
  2. Damper blade
  3. Operating mechanism
  4. Rubber sealing ring
  5. Intumescent strip
  6. Positioning plate
  7. Sealing ring for damper blade
  8. Fusible link
  9. Product identification