CU4L - Rectangular fire damper 240'

Damper with a tunnel casing extension at one or both sides so that the damper blade does not exceed the tunnel. This version allows to connect a grill or a bend directly on the damper flange or to use a circular connection.


  • Fire resistance 240 minutes


  • Extension: a = Hn/2-230 mm (on the side of the mechanism); b = Hn/2-100 mm (on the wall side)


  1. Connection flange PG30
  2. Casing made of refractory material
  3. Damper blade
  4. Operating mechanism
  5. Sealing cold smoke
  6. Blade bumper
  7. Intumescent strip
  8. Transmission with locking (open/closed)
  9. Fusible link
  10. Product identification