Backdraught Shutters (BDS)

Item Code BDS

Backdraught Shutter

Material: the backdraft dampers is made of galvanized steel, the flap leaves are made of aluminum, and the axis and spring are made of stainless steel.

backdraught shutters are designed with a split flap closure and allows the air flow to pass in one direction only.

Supplied with an inner foam seal for better air tightness and noise reduction.

It is recommended to install the shutter in the horizontal ducts.

Dimensions of extractor fan backdraft shutter (BDS)

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