Rectangular Multi Page Fire Damper
1. Tilt and sway: roll ± 15 °, pitch ± 10 °, roll ± 45 °, pitch ± 10 °
2. Frequency: 60Hz
3. Environmental temperature: -10 ℃~+45 ℃
4. Relative humidity: ≤ 95%
5. Fire resistance limit: 3h
6. Under standard conditions, after the fire damper is closed, the air leakage rate is 5m3/(m·2min)
Overview
How does a fire damper work?
1.Rectangular Multi Page Fire Dampers prevent the spread of fire inside the ductwork that crosses fire-resistance rated walls and floors. They are installed in or on the construction element in order to restore its fire-resistance rating.
2.The fire damper blade is open when the ventilation system is working. They close automatically thanks to the fusible link when the temperature in the duct exceeds a certain threshold: generally 72°C. In remote-controlled and motorised models, they can also close upon receiving a signal sent out by the fire safety system when it is activated by a smoke detector, for example. When closed, the fire damper maintains compartmentation during a guaranteed period.
Packaging
1.Packaging the fire damper with export standard wooden packaging with dust proof film ,.
2. Customized packing is available.
Shipping
1. Price: we will quote to you the most proper shipping freight and reduce your destination charge.
2. We will trace the whole shipping process and notice every step for you.
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