CU-LT-1S - Optimised rectangular surface-mounted fire damper up to 120'

Optimised rectangular surface-mounted fire damper with a fire resistance up to 120 minutes. CU-LT-1s combines the energy efficiency of our range of optimised dampers (minimum pressure loss, small dimensions) with the ease and speed of a dry assembly.


  • Fast installation
  • Optimal free air passage and minimal pressure loss
  • Optimal acoustic performance
  • Higher net building volume through compact size
  • Air-tightness class C according to EN1751


  • Tested according to EN 1366-2 up to 500 Pa
  • Suitable for surface-mounting on rigid wall, rigid floor and light wall (metal stud gypsum plasterboard wall, gypsum blocks)
  • Suitable for installation remote from the wall
  • Operating mechanism outside the wall
  • Maintenance-free
  • For indoor use
  • Intermediate dimensions on request
  • Operating temperature: max. 50°C


  1. Casing in galvanised steel
  2. Damper blade
  3. Operating mechanism
  4. Sealing cold smoke
  5. Intumescent strip
  6. Connection flange PG20
  7. Surface-mounting frame
  8. Product identification
  9. Bolt and cage nut