• +44 (0)1922 711185
  • sales@surespancovers.com
CPD Slide Out
+44 (0)1922 711185

SRHE 140° AOV Ventilators

140 AOV Smoke Vent


Our 140° AOV ventilators are operated by a 24v DC actuator, and the lid is filled with 50mm of CFC and HCFC free insulation with a minimum U-Value of 0.43W/m2K to BS 4841-5: 2006.

All of our standard 140° AOV ventilators are manufactured to meet the requirements of Building Regulations, Approved Document B, BS9999 and EN12101-2 and are supplied CE marked.

Lids are supported by heavy-duty stainless steel axel pins and feature an integral 'wrap over' edge, incorporating double seals. Upstands have a purpose made flashing to accept the roof felt (supplied by others and fitted under manufacturer's instructions) flush to exterior insulation.

Smoke ventilators can be supplied with an offset mechanism to provide use as a roof access hatch as well as a Smoke ventilator. Smoke ventilators can be adapated for pitched roof scenarios.

Made to any size

Suggested SIZES
1050 x 1200
1050 x 1350
1050 x 1600
1050 x 2100
1500 x 2000
1800 x 3000

Standard Features

  • Sizes up to 3000 x 1800 mm
  • Glazed AOV up to 3000 x 1400 mm
  • CE marked to EN12101-2
  • Custom made to any size
  • Insulation U-Value 0.43 W/m2K
  • Aluminium with thermally broken lid
  • Heavy duty stainless steel axel pins
  • 300mm Insulated Upstand
  • Electromagnetic Locking



Performance Characteristics to EN12101-2

Single actuator 140 degree opening AOV
Solid or Glazed top
1.05m to 1.2m width
Up to 2m length
Performance Characteristics to EN12101-2

Double actuator 140 degree opening AOV
Solid top/Glazed Top
Up to 1.8m/1.4m width
Up to 3m length
Performance Characteristics to EN12101-2



Suggested Sizes

Exposed Mechanism

Exposed Mechanism

Hidden Mechanism

Hidden Mechanism

CE marked

All Surespan standard size 140° AOV smoke ventilators are supplied CE marked to EN12101-2.

Structural Opening AreaFree Aerodynamic Area *Mechanism Position 
* the actuator mechanism occupies minimum space to give maximum clear opening space
1050 x 1200 1.26 m2 1 m2 Exposed Mechanism
1050 x 13501.4175 m21.25 m2Exposed Mechanism
1050 x 16001.68 m21.5 m2Exposed Mechanism
1050 x 21002.205 m22 m2Exposed Mechanism
Custom size 
Structural Opening AreaFree Aerodynamic Area *Mechanism Position 
* the actuator mechanism occupies minimum space to give maximum clear opening space
1050 x 13501.4175 m21 m2Exposed Mechanism
1050 x 15001.575 m21.25 m2Exposed Mechanism
1050 x 19001.995 m21.5 m2Exposed Mechanism
1050 x 24002.52 m22 m2Exposed Mechanism
Custom size 


Extensions & Ladders

Retractable safety grid


Retractable safety grid.

RetractabLE Extension


Retractab ladder extension.

Retractable hand hold


Retractable hand hold.

Fixed external hand hold


Fixed external hand hold 1100 high.

Retractable single post


Retractable hand hold single post.

Standard ladder


Standard ladder.

Ladder with cage


Standard ladder with cage.

Ladder with retractable lower section


Ladder with retractable lower section.

ZIP ladder


Retractable ZIP ladder.

Standard ship ladder


Standard ship ladder.

Ship ladder with platform


Ship ladder & platform.

Hinged ship ladder


Hinged ship ladder.

Fold away ship ladder


Fold away ship ladder.

SL Ladder within aperture

SL Ladder

Within ceiling aperture.


Optional Features

Walk on top cover


Sealed double glazed top.

Trace heating

Trace Heating

Placed within extrusion.

Twin colour hatches

External Colour

External powder coating

Twin colour hatches

Internal Colour

Internal powder coating

Walk on top cover


Rigid walk-on cover.

Rain skirt


Standard rain skirt.

Stainless Steel Hatch


Stainless steel access hatch.

Roof pitch hatch

Roof Pitch

With an extended skirt.

Roof inline hatch

Roof Inline

Aligned with roof line.

Louvred hatch


Louvred upstand.

Variable upstand


Variable upstand.

Pressure sensitive edge


Pressure sensitive edge.

Biocote antimicrobial coating


Antimicrobial technology.

Contact us for the latest info

+44 (0)1922 711185

  • 140° Opening
  • Glazed version
  • Locking
  • Operation

140° Opening

Surespan's 140 Vent is designed to stay open at a 140 degree angle to ensure that heat are diverted away from the opening and cannot be blown back into the building by wind.

Our cover opens to its fully open position within 60 seconds of activation.

Glazed version

The 35.5mm sealed double glazed unit will comprise Pilkington 6mm toughened K polished all round outer pane, 20mm Warm Edge silver spacer Bar argon filled, Pilkington 9.5mm toughened & laminated inner pane. This sealed glazed unit has a vertical centre pane U-Value of 1.5 W/m2K. Single actuator 1050x1050mm to 2000x1200mm structural opening solid top or glazed. Double actuator up to 3000x1800mm solid top only. Double actuator up to 3000x1400mm glazed top only.

Glazed AOV


Surespan can manufacture SRHE Ventilators to be held shut by a 24v electromagnetic solenoid switch, which can be wired into the FAS or BMS system for opening. The cover is manual closing as standard with switch or via fire alarm. A fully electrically operated version is also available. Please contact Surespan Sales for further details.

See SRHEI Specification for further information and Electrical Options for wiring diagrams.

AOV Locking


By 24v DC Actuator.

The ventilator is offered with a control box including transformer, battery charger, and battery back up system to cover in case of emergency power cuts.

Concealed actuator option available as shown on the photo.

140 AOV actuator

Contact us for the latest info

+44 (0)1922 711185

Request a Quote

Choose your model size and add the features by clicking the "Add to Spec" button.

EHDC Floor Hatch

Your specification

  • SRHE 105.120 Exposed Mechanism
  • None specified

Contact us

Leamore Close
Leamore Enterprise Park

Walsall, West Midlands
WS2 7NL, England

Telephone: +44 (0)1922 711185
Fax: +44 (0)1922 714099
E-mail: sales@surespancovers.com

VAT No. 559 605 804
Registered in England No. 2432359
© 2000 - 2015 Copyright Surespan Limited
Surespan Ltd