VU90-HOT - Rectangular HOT 400/30 smoke control damper.

Rectangular smoke control damper with a HOT 400/30 classification and a fire resistance up to 90 minutes.


  • Minimal pressure loss
  • HOT 400/30 performance (cycling for 30 minutes at 400°C)


  • Tested according to EN 1366-10 HOT test
  • Tested according to EN 1366-2 up to 500 Pa
  • Suitable for built-in installation
  • Suitable for rigid wall, rigid floor and light wall (metal stud gypsum plasterboard wall)
  • Operating mechanism outside the wall
  • Maintenance-free
  • For indoor use
  • Intermediate dimensions on request
  • Operating temperature: max. 50°C
  • 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 )


  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. Thermal protection for the connection flange
  10. Thermal housing for the operating mechanism