Email info@smoke-vent-systems.com or call now on 01425 473537

We supply louvres, hatches, dampers and windows for all types of SHEV and natural ventilation applications. We are specialists in offering off-the-shelf standard size ventilators and made to measure units for new build and refurbishment projects. These products should be installed and tested by a qualified electrician or competent professional. Please check out our gallery below for more information. You can click on an image to enlarge it, or click on a product name to find out more information.

New section: Old Stock and One Off ventilators are shown at the bottom of the page – look out for great offers.


Roof Application – Hatch & Louvre Ventilators

140 Degree Opening Smoke Hatch

160° Opening Smoke Hatch

Our smoke hatch ventilators are for smoke clearance of staircases, smoke shafts and lobby areas.  Fully certified to EN12101-2, our hatch ventilators comply with the latest regulations and opens to a maximum of 160°, each with a perspex lid to allow natural light through. The hatches are sold as smoke ventilators sized at 1sqm for staircases, or 1.5sqm for head of shaft ventilation.

Roof Opensky Louvred Ventilator

Opensky Louvre Ventilators

Roof Opensky ventilator is a cost effective and energy efficient smoke and natural ventilator for use in Smoke and Heat Exhaust Ventilation (SHEV). Opensky can be roof or wall mounted for exhaust or air inlet. The system offers effective fire safety with units tested for use as smoke ventilators. The roof Opensky can also be supplied with a hinged base which can be utilised as an Access Hatch

Stirling Casement Ventilator

Stirling Ventilator

The Stirling ventilator (SHEV) can be fitted both vertically and horizontally.  Various flanges are available to allow integration with non-glazed composite structures and integrate with modern curtain walls and other forms of structure. Can be naturally anodised or painted to any BS or RAL colour required. Tested to BS EN12101-2 for use as a smoke ventilator

Multijet Ventilator

The Multijet is a fully weathered ventilator specifically developed for smoke and natural ventilation for industrial applications for protection for buildings and occupants. The Multijet can also be supplied with polycarbonate blades allowing it to act as a source of natural daylight. A sustainable, low energy consumption hybrid ventilator.


XVent Glazed Roof Smoke Vent

The Xvent is an opening rooflight designed to vent smoke as an Automatically Opening Vent (AOV) and to provide day-to-day ventilation. The lid opens to an angle of 45° for ventilation, and to 140° when triggered by the fire alarm system. The Xvent has been designed and tested to EN 12101-2:2003

Velux Flat Roof CSP Smoke Vent Window

These VELUX flat roof window CSP effectively removes heat and smoke. This is a double glazed flat roof smoke ventilation system with laminated glazing and a polycarbonate cover. The smoke ventilator shown offers an area of 1.30m2 smoke free ventilation but other sizes are available. External frame size of 138cm x 138cm.


Pitched Roof Application – Centre-Pivot Windows

Velux Centre Pivot Smoke Vent Window

VELUX smoke-ventilation roof windows for sloping roofs with integrated motor are CE-marked in compliance with the European standard for smoke and heat exhaust ventilators EN 12101-2

Fakro FSR Centre Pivot Smoke Vent Windows

These Fakro FSR centre pivot smoke vent windows have an installation range of 15-90°.This smoke ventilation window has been manufactured and certified according to harmonised standard EN 12101-2:2003.


Wall Applications – Window & Louvre Vents

FLW32 Louvres Opened

Louvred Glazed Ventilator

The FLW 32 is the latest in the line of products developed by Fieger and is characterized by a number of improvements on the best-selling FLW 28 system. The FLW 32 features either double or triple-glazed louvres, which can be used to meet both day-to-day natural ventilation and emergency smoke control requirements.  The option to use triple-glazed elements together with insulated framework means that very low U-values can be achieved

Mercor Bottom Hung Windows

Mercor smoke exhaust windows are automatic natural smoke ventilators. Smoke ventilation windows are used to remove smoke and thermal energy from buildings to help protect occupants and property. MCR OSO THERM windows can also provide air supply in natural smoke exhaust systems. Additionally, they can be used for ventilation purposes. MCR OSO THERM windows are CE Certificated to EN 12101-2:2003 

Wall Opensky Ventilator

Wall Opensky Ventilator

We can supply louvred smoke ventilators for smoke clearance of staircases, smoke shafts and lobby areas. The ventilators comply with the latest regulations and we can issue a copy of the test certificate upon request. The louvred smoke ventilators are sold sized at 1.0sqm for staircases or 1.5sqm for head of shaft ventilation, and can be fitted with perspex blades to allow natural light into the stairwell.


Smoke Shaft Applications – Dampers

SND-R Natural Smoke Shaft Damper 

The Shaft Natural Damper – Residential (SND-R) is a multi-zone smoke control damper designed for use in natural smoke ventilation systems. It is typically installed into shafts to provide extract ventilation to corridors and into smoke control ducts in residential and commercial buildings. Harmonised Standard EN12101-8:2011 – tested and certified to the highest level including Insulation and Smoke Leakage. Fire resistance class of EIS 120.

Advantage smoke shaft damper

Avantage Smoke Shaft Damper with grill

Avantage smoke control dampers are noted for their superior airtight properties, fire-resistance of 60 to 120 minutes and low pressure loss. Developed in accordance with EN 12101-8 and tested according to EN 1366-10. CE Marked. Available as single (1V), double (2V) shutter units and a motorised version (MP). Suitable for use in ventilating protected lobbies, venting to shafts either naturally or mechanically for fan assisted shaft extract and pressurisation systems

Kamouflage Smoke Shaft Damper 

Kamouflage smoke control dampers are noted for their superior airtight properties, fire-resistance of 60 to 120 minutes and low pressure loss. Developed in accordance with EN 12101-8 and tested according to EN 1366-10. CE Marked. Available as single, double shutter units and P model, suitable for ceiling mounting into the bottom of smoke shafts. Suitable for use in ventilating protected lobbies, venting to shafts either naturally or mechanically for fan assisted shaft extract and pressurisation systems

26SSD Smoke Shaft Damper with grill

The new 26SSD model damper designed specifically for shaft smoke control systems to meet the current standard BS EN 121010-8. The 26SSD has been fully tested to the requirements of the product standard to BS EN 1366-10 for Automatic Activation Systems and is a multi compartment damper being tested to BS EN 1366-2 in both directions. Damper will maintains its open position for two hours and remain closed for two hours.


Roof Lights & Lanterns

Roof Lantern

Roof Lights & Lanterns

We offer a range of roof lights and lanterns suitable for all types of flat and pitched roofs. Made of aluminium with a polyester powder coat with a life expectancy of 25 years. Available as either a dome or a pyramid glazed using Makrolon Mono Longlife UV resistant polycarbonate sheet, which comes with a ten year warranty on breakage, excessive yellowing and loss of light transmission. Our range of roof lights and lanterns can be fitted with an opening vent using an actuator.


One-off and Old Stock ventilators

Here we have One (1) old stock electrically operated Opensky roof smoke ventilator in RAL 7046 which has not been fitted and has been stored so represents a great saving on new. Comes with windshields but no base – speak to office to discuss your base requirements. Please check linked drawing for sizes and free areas achieved.

This vent is especially suited to head of smoke shaft or industrial applications as the blades are solid.

Contact office on: 01425 473537 or, email: sales@smoke-vent-systems.com and quote this advert.  Delivery can be arranged to UK Mainland addresses.

Drawing – Opensky louvre roof ventilator