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Picture of Replacement Fire Damper Springs x2

Replacement Fire Damper Springs x2

Fire damper springs, also known as constant force springs, are essential components used on both sides of a curtain fire damper. They ensure the damper opens and closes correctly in the event of smoke or fire, helping to contain hazards within the ductwork.

Sold in pairs, as we recommend replacing both springs at the same time for balanced performance and safety compliance.

SKU: Alph54
£0.00 ex VAT

Our Replacement Fire Damper Springs are supplied as a set of 2 and are designed for maintaining and repairing compatible fire damper assemblies within commercial and industrial ventilation systems.

Fire damper springs are an important replacement component where damper mechanisms need to operate correctly as part of a fire safety system. They are commonly used during maintenance, inspection, and servicing work on ductwork fire dampers.

Compatible / other products include Fusible Links, BSB FD-C 250 Screw in Fusible Link 72c, Action Air Cassette Retrofit Kit 72c, and Rectangle Access Doors.

Suitable for fire damper servicing, HVAC maintenance, ductwork inspections, and replacement repair work, these springs help support safe and reliable fire damper operation.

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Picture of Fusible Links

Fusible Links

We offer a large range of replacement fusible links which can be used in different ways in dampers, doors and vents. All common fusible links are in stock and for sale on this page. Please enquire for other types if you cannot find them on our website, as we can offer higher temperatures.

  • Found in systems such as fire doors, fire dampers and sprinkler systems.
  • A metal link engineered to melt at a certain temperature, releasing a latch, closing a door or activating a sprinkler.

Common fire damper makes these are used on include BSB, HVC, NCA, Advanced Air, Action Air, Swegon, Chubb Fire, Flaktwoods, A1 Shutters, Lindab Fire Dampers, Wolseley UK, Fel Valves, Ascot Doors, Kidde Thorne, Dayton 2TGJ3 and Gilberts.

£0.00 ex VAT
Flat Access Doors Ducting

Flat Access Doors

Square and rectangular insulated, tabbed and sealed access doors for flat surfaced ducting. Used for resetting fire dampers and cleaning ductwork. Other sizes available please enquire.

£0.00 ex VAT
Round Access Doors Ducting

Round Access Doors

  • Curved access doors to suit circular ductwork. Used to access the insides of the ducting to reset fire dampers or to clean.
  • A sandwich type effect that clamps the opening with a gasket seal by wheel knobs.
  • Self adhesive template included.
  • Size: 250x150 - for all door's
  • Size: 400x300 - for 560 dia Big

£0.00 ex VAT
Picture of Action Air Cassette Retrofit Kit 72c

Action Air Cassette Retrofit Kit 72c

Replacement Action Air Fusible Link 72°C for compatible Actionair FireShield curtain fire dampers.

This replacement link kit includes a new bracket to connect to the existing damper along with a new linkage assembly for retrofit and maintenance applications.


The new cassette is retrofittable to existing FireShield dampers using the optional adaptor bracket (Part Number: CNNN01981).


  • Suitable for Actionair FireShield curtain fire dampers
  • 72°C replacement fusible link assembly
  • Includes replacement linkage and fixing bracket
  • Instructions included inside the package

Please note: this product will be discontinued once current stock has sold out.

£54.41 ex VAT