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Apollo ATI natural flap ventilator with weathered ventilation facility

Colt’s Apollo ATI is a natural flap ventilator that can provide both full extraction through its top flaps and weathered ventilation via longitudinal side flaps. It is a dual-purpose ventilator, providing both everyday climate control and smoke control ventilation and is generally installed onto rooftops, providing high level extract to most kinds of industrial buildings. Polycarbonate versions allow the entry of natural daylight. It is tested to and in compliance with EN 12101-2 and manufactured under the ISO 9001 quality and ISO 14001 environmental management standards.


  • Aerodynamic coefficient: Up to 0.69
  • 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), basic classification WL 1500
  • Resistance to heat: B 300
  • Low temperature class: T(00) or T(-15)
  • Materials resistance to fire: E (to EN 13501-1)
  • U value: Up to 1.5 W/Km²
  • Sound insulation: Up to 26.0 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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