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Firelight Duo natural flap ventilator

Firelight Duo provides high performance extract ventilation for most kinds of industrial and commercial buildings, and has been designed with the ever more stringent demands of the Energy Performance in Buildings directive in mind. It has been tested to and is in compliance with EN 12101-2.


The following performance attributes follow tests to EN 12101-2 (standard for smoke and heat exhaust ventilators). The exact performance attribute will depend on the chosen size, controls, and flap type.

  • Aerodynamic coefficient: Up to 0.68
  • Reliability: RE 1000 (10,000 cycles)
  • Wind load: Up to 8977 N/m²
  • Snow load: Up to 6947 N/m²
  • Resistant to heat: B 300
  • Low temperature class: T(00) to T(-15)
  • Materials resistance to fire: E (to EN 13501-1)
  • U value: Up to 0.52 W/m²K
  • Air permeability: Class 4 (to EN 12207)
  • Water tightness Class: 9A (to EN 14963)
  • Resistance to wind load: Class 5C (to EN 12210)
  • Sound insulation: Up to 49 dB R’w


Tested to and in compliance with EN 12101-2 and CE marked.

Classified as fall-through resistant when closed in accordance with “GS Bau 18”, achieving resistance to 300 Joules with the polycarbonate version and 1200 Joules with the insulated aluminium version.

Please contact us for more information relating to the application, specification, installation and servicing of this product.

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