Послепродажное обслуживание
Он-лайн служба технической поддержки
Стиль дизайна
Современный подвесной светильник
Происхождение товара
Zhejiang, China
Material
The casing use galvanized steel, the blades are made of aluminium
Surface finish
Galvanization
Contruction
With a inner foam seal for better tightness and noise reducti.
Use
Preventing the reverse of air-flow in circular duct systems.
working principle
Damper will open when blades are exposed to over pressure
Installation
Shall be installed to prevent back draught when the fan stops.
Keyword
back draught damper