CU2L ATEX - Wide-ranging rectangular fire damper up to 120’

Explosion protected fire damper for use in zone 1,2 (gas) and zone 21,22 (combustible dust) with a tunnel casing extension at one or both sides so that the damper blade does not exceed the tunnel. This extension makes it possible to use a circular connection (PRJ flange).


  • ATEX certificate TÜV 14 ATEX 7540 X


  • 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