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AOV Access Smoke Vent To fit Builders Upstand

  • Now From £1,035.75 (ex. VAT)
Item in Stock | Free Next Working Day Delivery (Mon-Fri)
Want it by Tuesday 6th October? Order within 1 day, 8 hours, 48 minutes and choose FREE UK Next Working Day Delivery (Mon-Fri) at checkout.
Free Delivery (see above for delivery estimate) WE ARE DESPATCHING ORDERS DAILY (MON-FRI)

Access smoke vents open for access as well as serving the main purpose of an AOV Smoke vent.

This particular model is designed to be fitted to a builders upstand and is fitted with an offset actuator to provide a sufficient clear opening for access to your roof.

Our AOVs are fully tested and certified in accordance with BS EN 12101-2, meeting standards for safety, security, non-fragility and fire safety with the full guarantee of an established, accredited UK manufacturer.

Fully certified to approved document B to automatically open and extract smoke in the event of a fire.

Please note, this is a bespoke assembled product, returns are not accepted. Please ensure you select the correct size.

Certification and Regulatory Information

  • Fire rating - achieves Class B-s1, d0 to BS EN 13501:Part 1 and deemed BROOF(t4) to BS EN 13501: Part 5 by Building Regulation
  • 72 hour battery back up in the event of power cut
  • Triple glazed polycarbonate option complies withPart ""L"" giving a high thermal performance and resistance to condensation
  • Safety - achieving Class B non fragility to ACR[M]001
  • The polycarbonate skin lid with an impact resistance to EN1873 1200 joules and Class B non-fragility in accordance with ACR[M]001
  • Opens to 140° in less than 60 seconds complying the requirements of the new Smoke Vent Standard BS EN12101-2

Operation and Options

  • Optional control panels, smoke detectors, fireman’s switches and manual control points available
  • Control panel can be activated from: Manual override switches, by dedicated smoke detectors or through integration with existing smoke detection and or fire alarm systems
  • Can be integrated into any building management system
  • Features back up battery to ensure operation in the event of no mains power

General Information

  • Suitable for residential and commercial buildings
  • Extremely secure with concealed individual fixings within security caps
  • Hinged long side (where applicable)
  • 10 year guarantee
  • CE Marked
  • Designed to last in excess of 20 years under normal conditions

How to measure DF Kerb version

How to measure

Aerodynamic free area - AOV Smoke Vents with DF Kerb(Aa)Aa
Smoke Vent Size (Note: Rectangular Sizes are Hinged on the Long Side)Daylight free area* Size Roof opening area (m2) Standard (no Wind deflectors)
CvAa m2
1050 x 1050mm900 x 900mm0.810.480.39
1200 x 1050mm1050 x 900mm0.950.460.43
1200 x 1200mm1050 x 1050mm1.100.470.52
1350 x 1050mm1200 x 900mm1.080.440.48
1350 x 1200mm1200 x 1050mm1.260.450.61
1350 x 1350mm
1200 x 1200mm1.440.400.67
1500 x 1050mm1350 x 900mm1.220.420.51
1500 x 1200mm1350 x 1050mm1.420.430.61
1500 x 1500mm1350 x 1350mm1.820.450.83
1650 x 1050mm1500 x 900mm1.350.400.54
1650 x 1200mm1500 x 1050mm1.580.410.65
1650 x 1350mm1500 x 1200mm1.800.420.76
1650 x 1500mm1500 x 1350mm2.030.380.76
1650 x 1650mm1500 x 1500mm2.250.440.99

Abbreviations: Aa = Aerodynamic Free Area, Cv = Coefficient flow
Mardome Trade Electronically Operated Access Smoke Vent Rooflights are individual polycarbonate domes intended for easy installation on flat roofs of all modern building types to provide natural smoke and heat exhaust, as well as comfort ventilation and access.

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UK Delivery Zones

Free Next Working Day Delivery on all stock items being sent to UK Zones A&B

The lead times and delivery service are clearly displayed against each product, just below the price.
We will continue to send items on a Next working day delivery, but please accept delivery might take longer, this is out of our control.

Please note, for certain products and delivery zones we can offer AM deliveries and Saturday Deliveries, if available, you'll be able to select and pay for these options via the checkout.

Delivery Charges will be applied for deliveries to geographical  areas represented as Zones C, D and E:
This includes certain parts of Scotland, Scottish Islands, Northern Ireland, Channel Islands and IOM)

You can return a standard product within 14 days of receipt.
Please note Made to measure products cannot be returned.
Click here to download a return form.


COVID-19 - Important information about deliveries from our carrier Parcelforce

Our couriers have had to make some changes in order to protect you, and their staff, while also dealing with exceptionally high demand. As a result the following changes apply:

Parcelforce Worldwide Update - Coronavirus (COVID-19) Public Health England (PHE) has advised that people receiving parcels are not at risk of contracting the coronavirus (COVID-19). From experience with other coronaviruses, we know that these types of viruses don’t survive long on objects, such as letters or parcels. This complements the highly publicised guidance from PHE for people to wash their hands more often than usual using soap and hot water.

Changes to our delivery procedure in relation to signing for and receiving items in the UK

In order to protect both our people and customers as much as possible, we will not be handing over our hand-held devices to customers to capture electronic signatures. Our drivers will instead log the first and last name of the person accepting the item and we will record the geolocation of the delivery. This will apply to all deliveries that normally require a signature.
If recipients are unable to come to the door or are self-isolating, we will post a customer contact card in the normal way, advising of other ways the recipient can arrange to get their item. For example, by getting a friend or family member (who is not resident with someone who is self-isolating) to collect the parcel from their local Parcelforce depot or Post Office branch, as specified on the card. They will need to bring along the card we left and a form of ID in the name of the person the item is addressed to. Examples of suitable ID are specified on the card.

Suspension of UK service guarantee

Due to the current situation, there are significant impacts on our ability to maintain all our usual service levels. We will continue offering our services, receiving and delivering parcels for our customers but there may be disruptions to some services under current conditions. As a result, we will be suspending service guarantees from 18 March 2020 but will seek to ensure ‘all reasonable endeavours’ to maintain service levels where we can.