Casing is made of galvanized steel sheet and blades are made of aluminium. Gaskets are used for providing better impermeability and reducing the sound level.
Properties:
Flap opens under the effect of high pressure and when the pressure effect is gone it closes with the help of the spring.
Casing is made of galvanized steel sheet and blades are made of aluminium. Gaskets are used for providing better impermeability and reducing the sound level.
Properties:
Flap opens under the effect of high pressure and when the pressure effect is gone it closes with the help of the spring.
