Stair Louvre with Separate Daily Ventilation Side Vents – 1.0m2


Our CE marked to BS EN 12101-2 louvre provides discharge of smoke and fumes through the motorised blades along the length of the frame. A choice of blades is available with standard and insulated aluminium blades.


If you require bespoke sizes, please contact us.


Standard delivery to site is included in the cost. Please note that this is a delivery only service, all off loading is to be done by the customer. Delivery does not include FORS, hi-ab or timed service.


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Frequently Bought Together

+ EV-301Smoke Ventilation AOV Control Pane Control Panel + Firemans Override Switch
Price for all three: £4,033.00

The EV-AOV-MV Stair Louvre with Separate Daily Ventilation Side Vents is a roof louvred Multisky is a natural and smoke ventilator perfect for comfort ventilation or as part of an N-SHEV (Natural, smoke and heat exhaust ventilation) system. The separate comfort ventilators are fully enclosed so can be used in wet conditions.

The roof Multisky has been tested to BS EN 12101 – Part 2: 2003: Specification for natural and heat exhaust ventilators.

The louvre base is designed to be mounted on the top of a pre-constructed upstand and shall be supplied with a 30mm turndown and a 250mm flange to allow for curbs with added insulation.

The casing is made from corrosion-resistant aluminium alloy, which can be powder coated to any standard RAL colour for an additional cost.

Stair Louvre with Separate Daily Ventilation Side Vents at a glance:

  • High free area performance
  • Meets 1.0m²free area requirements
  • Opens within 60 seconds
  • Low maintenance & cost effective smoke vent
  • 6W/m2ºk U-value capability
  • Side damper for all weather conditions
  • Mill Finish or custom RAL colour
  • Tailored base to suit any sized opening

Bespoke sizes are available, please contact us if this is required

As per our terms of sale this product is non-refundable.

Under the Construction Products Regulations (CPR) it is a legal requirement to use only certified products for smoke ventilation. It is the responsibility of the installer to ensure installations meet the relevant standards. For more information see SCS Group’s Technical Bulletin.




CE marked to BS EN 12101-2

Blade Type

Aluminium, Opal Polycarbonate

Casing / Material

Mill finished aluminium




L:1290mm x W:2567mm


Mill finished aluminium

Free Area

0.92m² – Aerodynamic

Geometric Free Area

1.04m² – ADB

Input Voltage

2 no. 24V DC

Nominal Current


U Value

0.67W/m².K (aluminium insulated blades), 1.75W/m².K (opal polycarbonate blades)

Product Weight


Wind Load

WL 1500

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