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FSD-C Series - Galavanised Steel Blades, Installation Plate (IP)
From £67.66 excl. VATUnit price excl. VAT /UnavailableGrille for Lobby Damper/ Natural Lobby Damper (White)
From £122.18 excl. VATUnit price excl. VAT /UnavailableFD-C Series - Galvanised Steel Blades, Installation Plate (IP)
From £59.23 excl. VATUnit price excl. VAT /UnavailableFSD-C series - Galavanised Steel Blades, Installation Plate (IP) & Rotatable Cleats (R-CL)
From £85.10 excl. VATUnit price excl. VAT /UnavailableRVC Series - Galvanised Steel Blades, Hand Operated
From £30.46 excl. VATUnit price excl. VAT /UnavailableFSD-TD Series - Type C, Galvanised Steel Blades, Easy Fix Angle Frame (AF)
From £157.83 excl. VATUnit price excl. VAT /UnavailableFSD-TD Series - Type S, Galvanised Steel Blades, EASY FIX Angle Frame (AF)
From £198.88 excl. VATUnit price excl. VAT /UnavailableHD Series - Flangefit, Galvanised Steel Blades, Hand Operated/Extended Spindle
From £45.23 excl. VATUnit price excl. VAT /UnavailableVC Series - Spigotfit, Galvanised Steel Blades, Hand Operated/Extended Spindle
From £29.09 excl. VATUnit price excl. VAT /UnavailableFD Series - Type B, Galvanised Steel Blades Out of Airstream, Angle Frame (AF)
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Frequently Asked Questions
What are BSB Smoke Dampers and Fire Dampers?
What are BSB Smoke Dampers and Fire Dampers?
BSB fire and smoke dampers function as specific ventilation devices which get installed in air vents. The devices function to block fires and smoke from moving between building areas. The dampers operate as gates that automatically shut down when they detect heat or smoke. The fire containment system stops the fire from advancing to different building sections. The safety feature plays a vital role in protecting people and minimising property damage. The UK safety standards guide the design of BSB dampers which find widespread application in commercial buildings.
What are BSB fire and smoke dampers used for?
What are BSB fire and smoke dampers used for?
BSB’s FSDTD fire and smoke dampers are designed to be installed in ducted HVAC systems at fire boundaries. They maintain the integrity of firerated compartments by closing off the duct if fire or smoke is detected, helping to prevent the spread of fire and smoke through walls, floors, ceilings and cavity barriers. The FSDTD series is suitable for areas of sleeping risk and protected escape routes.
Why are BSB Dampers Important for Fire Safety in the UK?
Why are BSB Dampers Important for Fire Safety in the UK?
The BSB smoke dampers act as a vital fire safety component because they stop fires from moving from one area to another. All buildings in the UK need to adhere to specific fire safety regulations. BSB dampers enable buildings to comply with regulations by containing fires and smoke. The system provides additional time for occupants to exit the building safely. The importance of this system becomes critical in large structures including offices and schools. Building owners who install BSB dampers guarantee they have taken all necessary safety precautions.
How Do BSB Fire and Smoke Dampers Work?
How Do BSB Fire and Smoke Dampers Work?
A fire damper is normally held open by a fusible link. When heat from a fire melts this link (normally at about 165°F or 74°C), the blades close and seal the opening. Static fire dampers are used when the HVAC fan is shut down, while dynamic fire dampers are used when the fan continues to operate; dynamic dampers must close against the air flow in a moving system.
What certifications do BSB FSDTD dampers carry?
What certifications do BSB FSDTD dampers carry?
The FSDTD series is independently thirdparty tested. It is fireresistance tested to BSEN13662, classified as an ESrated damper under BSEN135013, and CEmarked to BSEN15650. The damper casing achieves leakage ClassC to BSEN1751 and the closed blade leakage meets Class2.
Please click on our Technical Bulletins for more detailed guidance
What materials and sizes are available?
What materials and sizes are available?
BSB offers the FSDTD series in galvanised or stainlesssteel construction. Units can be supplied in rectangular, circular or flatoval spigot configurations, with tested horizontal and vertical options and five frame variations to suit different applications. Sizes range from 100mm ×100mm up to 1000mm ×1000mm in a single section, with larger multisection formats available.
Are BSB Dampers Required by Law in the UK?
Are BSB Dampers Required by Law in the UK?
The UK requires buildings to adhere to specific safety regulations which protect people from fire incidents. BSB fire and smoke dampers serve as essential components in fulfilling these safety regulations. The installation of fire dampers is mandatory in most buildings although the exact requirements differ. BSB dampers serve as popular solutions because they fulfill all necessary UK safety requirements such as CE mark EN 12101-8. Property owners need to contact their local authorities to determine which particular regulations they need to implement. The installation of BSB dampers enables buildings to meet their regulatory requirements.
How are BSB dampers operated and tested?
How are BSB dampers operated and tested?
The FSDTD series uses an opposedblade design that is held open by an actuator and springs closed when the damper control system or fire alarm sends a signal. BSB’s design includes a thermalfuse test button, allowing routine testing without specialist tools or access panels. For annual testing please refer to the damper technical document.
Please see the dampers Technical Bulletin for more details
What is the difference between fire and smoke dampers?
What is the difference between fire and smoke dampers?
Fire dampers maintain the fireresistance rating of barriers by automatically closing when exposed to heat, whereas smoke dampers prevent smoke movement through HVAC systems and are operated by smoke detectors or a firealarm system. BSB’s FSDTD is a combination fire and smoke damper, providing both functions and is suitable for installations where smoke control is also required.
More technical details and relevant standards are below.
BS EN 1366 and Dampers
1. Fire Dampers
- BS EN 1366-2: Fire resistance tests for service installations – Part 2: Fire dampers
- This is the primary test standard for fire dampers (those designed to stop fire spread through ducts/walls).
- Tests the damper’s integrity (E) and, where relevant, insulation (I) when exposed to fire.
- Demonstrates how long the damper can prevent fire/smoke spread (e.g. E120, EI60).
2. Smoke Control Dampers
- BS EN 1366-10: Fire resistance tests for service installations – Part 10: Smoke control dampers
- This applies to dampers used in smoke control systems, e.g. those in smoke shafts in HRBs.
Tests for:
- Integrity (E)
- Insulation (I)
- Smoke leakage (S) at ambient and elevated temps
- Reliability (C) — cycling (open/close up to 10,000 times)
- Response to pressure (Pa) — e.g. 1500 Pa to simulate shaft pressures
3. How this links to BS EN 12101-8
- BS EN 12101-8 is the product standard for smoke control dampers.
- To get CE/UKCA marking to BS EN 12101-8, a damper must be tested to BS EN 1366-10.
In other words:
- 1366 = test standards (lab performance evidence)
- 12101-8 = product standard (design, certification, marking)
4. Fire vs Smoke Dampers in practice
Fire damper: Tested to EN 1366-2, CE-marked to EN 15650.
Smoke control damper: Tested to EN 1366-10, CE/UKCA-marked to EN 12101-8.
Are there different types of BSB dampers for specific applications?
Are there different types of BSB dampers for specific applications?
Yes. Besides the motorised FSDTD series, BSB manufactures mechanical curtainblade fire dampers (FD series) and singleblade rectangular dampers (FDR series) for spaces where a motorised unit is not necessary or space is limited. The FSDTD series is suited for ducted systems requiring both fire and smoke control, while the FD and FDR series focus on fire integrity and may have manual reset mechanisms (information available in their technical sheets).
Where can I find installation instructions or obtain technical support?
Where can I find installation instructions or obtain technical support?
Our website provides detailed installation methods, specifications and brochures for each product. The FSDTD page includes links to an installation, operation and maintenance (I,O&M) manual and declaration of performance.
Which BSB damper provides both fire protection and volume control for circular ducts?
Which BSB damper provides both fire protection and volume control for circular ducts?
BSB’s FDC series is a circular singleblade, externally resettable combination fire and volumecontrol damper. It is designed to prevent the spread of fire and smoke through circular ducts passing through walls, floors, ceilings and cavity barriers. The damper is ESclassified for reduced smoke leakage and is available in diameters from 100mm to 315mm. It can be installed from one side of the barrier without needing firerated infill material.
How does the FDC series close during a fire and reset afterwards?
How does the FDC series close during a fire and reset afterwards?
The FDC damper is held open against a torsion spring. When the fusible link, rated at 72°C, melts, the spring mechanism releases and closes the damper. After activation, the damper can be reset externally; its design allows testing without specialist tools.
What distinguishes the FDC from the FSDC series?
What distinguishes the FDC from the FSDC series?
The FDC is a mechanical combination fire/volumecontrol damper operated by a fusible link and torsion spring. The FSDC series is a motorised circular singlebladeESrated fire damper intended for circular ducts; it is held open by an actuator and springs closed when signalled by a control system or fire alarm. Because it is motorised, the FSDC is recommended for areas with sleeping risk and protected escape routes and can be supplied with 24 V or 230 V actuators to suit control requirements.
What is the FDR series and where should it be installed?
What is the FDR series and where should it be installed?
The FDR series is a rectangular singlebladeESrated fire damper that combines fire protection with volume control. It is designed for rectangular ducts passing through firerated walls, floors and ceilings and can be installed from one side of the barrier without firerated infill material. Standard sizes range from 100×100mm up to 300×300mm.
How does the FDR series operate and what features make it user friendly?
How does the FDR series operate and what features make it user friendly?
Similar to the FDC, the FDR damper uses a torsion spring held open by a fusible link that melts at 72°C; when the link melts, the spring closes the damper. The damper is externally resettable and can be tested without specialist tools. However, for escape routes and sleepingrisk areas, BSB advises using the motorised FSDTD damper instead.
Why are motorised dampers like FSDT or FSDC recommended for escape routes and sleepingrisk areas?
Why are motorised dampers like FSDT or FSDC recommended for escape routes and sleepingrisk areas?
Motorised dampers can be remotely controlled and monitored, ensuring quick closure and integration with fire alarm systems. The FSDTD series, for example, is designed for installation at fire boundaries and offers robust performance in fire and smoke control, explicitly stating suitability for “areas of sleeping risk and protected escape routes”. The FSDC series likewise notes that it is appropriate for sleeping risk areas and escape routes.
See our Damper Technical Bulletin for more details
Does BSB provide control panels for monitoring and operating multiple dampers?
Does BSB provide control panels for monitoring and operating multiple dampers?
Yes. BSB’s ACP series addressable damper control system offers centralised control, testing and monitoring of connected fire dampers. The system can be programmed to implement both simple and complex causeandeffect strategies, making it suitable for larger or more intricate lifesafety applications. In addition, the EM series electromechanical control panels are designed to operate 24V and 230V actuators and integrate with firealarm systems.
Are there BSB dampers designed for marine or offshore applications?
Are there BSB dampers designed for marine or offshore applications?
Yes. The A60 series marine fire damper is a multi blade motorised damper designed to protect fire rated bulk heads and decks on ships. It is suitable for vertical and horizontal installations and can operate where system pressure is up to 2000Pa and duct velocities do not exceed 20ms⁻¹.
What size and material options are offered in the A60 marine series?
What size and material options are offered in the A60 marine series?
The A60 damper has square/rectangular flanged connections from 100×100mm up to 1000×1000mm, and circular connections from 100mm to 1000mm diameter; larger multiple assemblies (up to 2080×1000mm) are available for vertical installations. The casing and blades can be supplied in galvanised or stainless steel.
What does ES classification mean and why is it important?
What does ES classification mean and why is it important?
Fire dampers are classified according to EN 135013. The letter E denotes integrity, meaning the damper resists the passage of flames or hot gases, while S denotes smokeleakage, indicating that the damper resists the passage of smoke (smoke leakage must be < 200 m³·h⁻¹·m⁻²). The BSB FSDT, FSDC, FDC and FDR series all carry an ES classification, signifying that they maintain fire integrity and offer reduced smoke leakage.
See technical bulletin for more info
What features make BSB’s HDIB Series suitable for demanding air control applications?
What features make BSB’s HDIB Series suitable for demanding air control applications?
The HDIB Series Heavy Duty Reduced Leakage Damper is built for air conditioning and ventilation systems where reduced closed blade leakage and durability are critical. It has a 100mm wide interlocking blade profile with gaskets on all four sides and is available in galvanised or stainless steel. It handles velocities up to 20ms⁻¹ and duct pressures to 2000Pa, can be operated manually or with Belimo actuators and is offered in rectangular, spigotted and circular single section sizes from 100×100mm up to 1000×1000mm (circular up to 1422mm diameter) with multi section assemblies also available
Can a single BSB control panel manage hundreds of dampers?
Can a single BSB control panel manage hundreds of dampers?
Yes. The ACP Addressable Damper Control Panel is a software driven system that can control up to 350 dampers from a single panel. It supports one to seven networks per panel, each network managing up to 50 actuators, and features a 4.3inch colour touch screen for clear status indication.
How do ACP panels integrate with building management systems and what environments do they suit?
How do ACP panels integrate with building management systems and what environments do they suit?
ACP panels include programmable voltfree inputs and outputs and are compatible with Modbus and BACnet, allowing integration with firealarm and buildingmanagement systems. They are housed in IP56rated cabinets and are designed to operate in ambient temperatures from 0–70°C. Each panel is supplied with an Addressable Damper Module (ADM), which communicates with individual actuators; the ADM’s transparent ABS housing shows LED status and is available for 24V or 230V actuators.
What are the standard sizes and grouping options for BSB’s EM electromechanical panels?
What are the standard sizes and grouping options for BSB’s EM electromechanical panels?
he EM Series Electro Mechanical Damper Control Panels provide hard wired control and monitoring for up to 50 dampers. They are available in standard panel sizes EM5, EM10, EM20, EM30, EM40 and EM50; models EM20 and above allow the dampers to be grouped into zones of 10 for control purposes. Damper status for each actuator is shown via tri colour LEDs.
Where are ATFSD motorised air transfer dampers used and what options are offered?
Where are ATFSD motorised air transfer dampers used and what options are offered?
ATFSD Series motorised fire dampers are installed above protective doorways and extended fire separations in unducted settings, permitting air movement between stairwells and lobbies while maintaining compartmentation during a fire. The dampers are ESrated to BS EN 135013 and CEmarked to BS EN 15650, available with 24V or 230V actuators. Sizes range from 200 mm × 175 mm up to 1 000 mm × 300 mm, and an optional grille in RAL 9010 is offered. They can be installed from one side of the wall and are suitable for escape routes and areas with sleeping risk.
See technical bulletin for more info on design standards
What separation distances and openings are required when installing BSB fire dampers?
What separation distances and openings are required when installing BSB fire dampers?
Installation guidance recommends that each fire damper be placed in its own structural opening. Fire dampers in separate ducts should be at least 200mm apart, and there should be a minimum 75mm clearance between the damper and the surrounding construction to allow for thermal expansion and preserve the fire barrier. Check specific manufacturers instructions for clarification and seek guidance from professional consultants to ensure compliance with the fire strategy.
Why is a breakaway joint important and how is it provided?
Why is a breakaway joint important and how is it provided?
A breakaway joint prevents the transmission of large forces from the ductwork to the fire damper and surrounding structure during a fire. Guidance notes that a section of duct that will not transmit more than 20 N load (often a flexible connector) should be installed between the damper and the adjoining duct. This ensures that duct deflection or distortion does not compromise the fire barrier. Refer to detailed manufacturers instructions.
What does CE marking entail for fire and smoke dampers?
What does CE marking entail for fire and smoke dampers?
To bear the CE mark under BS EN 15650, dampers must undergo type testing and be manufactured under factory production control. Classification letters in accordance with EN 135013 indicate performance: E denotes integrity (preventing passage of flames), S denotes limited smoke leakage, and I (when specified) indicates thermal insulation. Many BSB dampers are ES classified, meaning they maintain integrity and offer reduced smoke leakage.
Are there BSB dampers specifically for balancing airflow in homes?
Are there BSB dampers specifically for balancing airflow in homes?
Yes. The RVC Series residential volume control dampers are designed to balance airflow in ducted ventilation systems. They are single blade galvanised steel dampers with a blade locking mechanism and position indicator and are made as male fittings for the three common plastic duct sizes—220×90mm, 204×60mm and 110×54mm. The male connection eliminates the need for extra fittings, making installation straightforward.