+353 1 463 4300 sales@amsventilation.com

CR2 up to 630mm Ø

Circular Fire Dampers

Circular Fire Damper CR2

Circular fire damper available in the largest dimensions (up to a diameter of 630 mm) with a fire resistance up to 120 minutes. Its refractory tunnel is made of galvanised steel and its blade consists of asbestos-free panels, which are resistant to humidity.

Fire dampers are installed where air ducts penetrate fire-resistant compartment walls. Their role is to restore the fire resistance grade of the penetrated wall and to prevent smoke propagation. Fire dampers are distinguished by their degree of fire resistance, by their aeraulic properties as well as by their installation ease. Rf-Technologies’ fire dampers are all CE marked. They can be equipped with various types of mechanisms depending on the specific needs linked to the project or to the local regulations.

• Large dimensions

Product Highlights

• Suitable for built-in installation

• Minimal distance allowed

• Suitable for rigid wall, rigid floor and light wall (metal stud gypsum plasterboard wall,       gypsum blocks)

• Sealing with fire resistant stone wool boards allowed, also for asymmetric opening

• Air tightness in accordance with EN 1751: class B (class C in option)

• 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. Sealing cold smoke
  5. Blade bumper
  6. Intumescent strip
  7. Fusible link
  8. Rubber sealing ring
  9. Product identification