BSB Dampers
Air, Fire and Smoke Control
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BSB Engineering Services Ltd.
Unit 56, Trinity Trade Centre,
Mill Way, Sittingbourne,
Kent ME10 2PD, United Kingdom
Sales Office: +44(0)1795 422609
General Enquiries:
+44(0)1795 505366
For purchase orders please email:

For pricing enquiries please email:

For technical enquiries please email:

For all other enquiries please email:

The BSB BD Series Backdraught Damper

Material Specifications

1.2mm (18swg) galvanised mild steel to BS EN 10346 DX51.
Please note:- When Stainless steel case models are supplied, our quotation will be for the supply of natural finish product only. Cleaned and polished welds/casing are available at extra cost.

Blade Bushes
Injection moulded Nylon 66.

Extruded aluminium to BS EN 755-9:2008. Wall thickness 1.0mm. Alternative blade materials are currently not available.

Blade Spindles
IXEF semi-crystalline polymer polyarylamide.

Blade Limiting Angle (horizontal application)
10 x 15 x 18 gauge galvanised steel running full length to one side only.

Jamb Seals (Optional)
Punched aluminium strip to BS EN 755-9:2008. 3.0mm (10swg) thick, that is also a combination blade limiting stop in the open and closed position.

Aluminium primer is applied to all welds and ground surfaces.

Edge Seal
Nylon brush seal.

Performance and Application
Temperature: 0ºC to +100ºC.
Velocity: 1m/s to 12m/s, horizontal airflow.

BSB Engineering Services Ltd. reserves the right to modify or withdraw any specification without prior notice that may result from continuous product development. The information contained within this website is for reference only. Full product details should be obtained from our Sales Office.

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