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 HD Series Heavy Duty Duct Damper

Multiple Assemblies

Illustrated below are several variants to multiple section units. Blade lengths are up to 1250mm with 15mm centre mullions used where case widths extend to sizes greater than maximum blade length.

When there are transportation restrictions, large multiple units will be shipped in individual sections for site assembly by others. Joining strips are supplied un-drilled unless requested otherwise.

Large multiple units required to be shipped fully assembled will incur additional packing/shipping costs. Please contact our sales office for further information.

Low Leakage Models

It is important to note that the low leakage model is only supplied up to 1000mm in width and height, with multiple sections supplied for units greater than 1000mm.

Special Note:
BSB can manufacture to individual specifications and applications. Illustrated below are standard variants with other variants available to order.
For applications which necessitate the blades to be installed vertically, BSB’s sales office must be informed so that thrust bearings are fitted to eliminate blade friction.

Single and Multiple Damper arrangements are designed to be installed with blades in the horizontal plane.
Drive spindle is always fitted to the second blade down. Alternative positions are possible to special order.

Sizes up to 2500 x 4000mm Sizes up to 5000 x 4000mm

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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