All our fire shutters are manufactured and produced in accordance with the parameters and technical respects indicated within the specification, which was submitted to Warrington Fire Research Centre WARRES No 150735, the test is in accordance with clause 8 of BS476 part 22:1987.

Curtains constructed from a 76mm curved steel scroll laths (minimum 22sg laths) interlocked with steel end locks and galvanised T section bottom rail.

Barrel manufactured from mild steel tube, tube size varies based on the overall width and height of the curtain and the gauge of laths. The tube wall thickness varies dependant on the width of the shutter, the barrels are mounted on bright steel shafts varying from 25mm to 50mm dependant on the overall size of the shutter, the shafts have mild steel bearing blocks at each end incorporating high speed bearings.

Guides constructed from 65mm straight channel galvanised guide mounted on 75mm x 50mm mild steel angle

Hood formed from 20sg steel sheet, with the top leg slotted for expansion. Dependent on the fire rating of the shutter (i.e. 1HR, 2HR & 4HR) and the size of the opening, the shutter could require a hood support bracket.

Finishes the curtain and guides are galvanised angles, barrel and end plates are painted. A paint finish using a polyester powder coating system is available, the colour to a BS 4800 or RAL number subject to availability.


  • Self Coiling
  • Chain operated
  • Electrically operated

Release Mechanisms:-

  • Fusible Link
  • Manual Solenoid
  • Auto Solenoid



On activation the link, which is a soldered link, separates and releases at 68 degrees centigrade, on the manual shutter this will release the drop bar and the shutter will close under its own weight, on the electric shutters the manual brake release is activated and the shutter will close under a controlled manner.


All solenoid release mechanisms are designed to be linked into the fire alarm, the signal required from the alarm is 24 volt D.C 0.5 amps on activation.
The signal from the fire alarm will trigger the manual brake release and allow the door to close under a controlled descent.


Again this is linked to the fire alarm and the ampage requirements are as above, this is the most commonly used activation allowing for frequent testing & re-setting, when the door is returned to the open position (after removal of fire signal), the solenoid can be automatically reset.


Principally this unit is designed to delay the closing of the fire shutter; generally the fire alarm is linked to the audio visual unit and from the audio visual unit straight into the key switch. There is no need for a separate relay; there is already a relay in the FDI.

On activation from the fire alarm the unit starts to “flash & sound”, this unit contains a programmable timer which effectively delays the signal to the relay in the panel to close the door.

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