+353 1 463 4300 sales@amsventilation.com


Smoke Dampers

VU90-HOT Smoke Control Damper

Rectangular VU90-HOT smoke control damper, with a fire resistance up to 90 minutes. The refractory tunnel is made of moisture resistant and asbestos-free plates. The HOT 400/30 classification ensures the continued operation (opening and closing of the blade) at a temperature up to 400°C during the first 30 minutes of a fire. The VU90-HOT was developed in accordance with the European product standard EN 12101-8 and tested according to EN 1366-10.

Smoke control shutters and dampers are suitable for use in ventilating protected lobbies, venting to shafts either naturally or mechanically. They open to evacuate smoke in emergency situations whilst maintaining fire resistant integrity in standby position.

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

Product Highlights

• 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