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Apollo natural flap roof ventilator

The Apollo natural flap ventilator provides both smoke and day-to-day ventilation. It allows extract ventilation for most kinds of industrial buildings and is usually installed on building rooftops. Polycarbonate versions allow the entry of natural daylight. It is manufactured under the ISO 9001 quality and ISO 14001 environmental management standards and conforms to EN 12101-2.


  • Aerodynamic coefficient: Varies with size and options, up to 0.68
  • Reliability: RE 1,000
  • Wind load: Varies with size and options, classified at WL 1500 (1,500 N/m²)
  • Snow load: Varies with size and options, up to 5,700 N/m² (electric) or 1500 N/m² (pneumatic), base classification WL 1500
  • Resistance to heat: B 300
  • Low temperature operation: T(-15)
  • Materials resistance to fire: E (to EN 13501-1)
  • U value: Varies with size and options, from 1.8 to 4.9
  • Sound insulation: Up to 28 dB R‘w


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

Tested and certified as fall-through-proof in 300J and 1200J tests by an external test house.

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

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