AXS 140

Combined AOV smoke ventilator and roof access hatch

AXS 140 is a combined AOV smoke ventilator and roof access hatch providing either 1 m2 or 1.5 m2 measured free area in accordance with Approved Document B, Appendix C.

It is suitable for use as a staircase ventilator or roof mounted lobby/corridor ventilator to provide external roof access. It has been tested to and is in compliance with BS EN 12101-2 and is CE marked. It is manufactured under the ISO 9001 quality and ISO 14001 environmental management standards.

Features and benefits

  • A wide range of applications
  • Weather resistant
  • Durable
  • Large opening angle
  • Certified performance
  • High thermal performance
  • High acoustic performance
  • Low silhouette

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The following performance attributes follow tests to EN 12101-2:2003 (standard for smoke and heat exhaust ventilators). The exact performance attribute will depend on the chosen size, controls, and flap type.

  • Reliability: RE 50 (1,000 cycles)
  • Wind load: 1500 N/m2
  • Snow load: 250 N/m²
  • Resistant to heat: B 300
  • Low temperature class: T(-5)
  • Materials resistance to fire: E (to EN 13501-1), depends on version specified
  • U value: Up to a maximum of 1.3 W/m²K (aluminium lid version), 2.4 W/m²K (polycarbonate lid version)
  • Watertightness: rain defence tested to 75m/hr @ 13 m/sec
  • Air permeability: Class 2/3 (depending on unit specification) to BS EN 12207:2000
  • Sound insulation: (R'w) 29 dB R’w


  • Dimensions / size range
  • Flap options
  • Colours/ finishes options
  • Fixing options
  • Controls options

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


AXS 140 combined AOV smoke ventilator and roof access hatch

A wide range of applications - AXS 140 is installed onto roofs providing high level smoke control extract as well as roof access. Its polycarbonate flap option allows the entry of natural daylight.

Weather resistant - The sealing system consists of EPDM profiles which keep air leakage down to a minimum.

Durable – The AXS 140 flap is manufactured from tough, corrosion resistant aluminium with aluminium hinges and stainless steel pivots. It is manufactured under the ISO 9001 quality standard.

Large opening angle – AXS 140 opens to 140⁰ which permits it to meet the requirements of EN 12101-2 for this kind of product.

Certified performance - AXS 140 has been tested and certified to EN 12101-2: 2003 in accredited third party test laboratories and is CE marked.

High thermal performance – Thermal performance varies with size and options, ranging from 1.3 to 2.4 W/m²K.

High acoustic performance – A sound reduction of up to 29 dB (R’w) may be achieved.

Low silhouette - No ugly and inconvenient wind deflectors are needed.


Dimensions / size range

  • (S) 1250 x 1000 (throat dimensions)
  • (L) 1250 x 1500 (throat dimensions)

Flap options

  • Thermally broken aluminium frame and insulated aluminium panel
  • Thermally broken aluminium frame and polycarbonate panel

Fits tightly to frame with continuous EPDM seals for excellent airtightness. Opens to 140⁰ from the horizontal.

Colours/ finishes options

  • Mill finish
  • Polyester powder painted to a RAL colour, standard 40 mu.


Fixing options

Fixing flange for curb. Installation angle must be at 0° (horizontal).

Controls options

24 V DC linear actuator (drive in / drive out)


S Version

L Version

Measured free area (m2)



Throat width (mm)



Throat length (mm)



Overall width (mm)



Overall length (mm)



Clearance for flap from base edge (mm)



Weight (Kg)