20


feature


product focus JZ201


fire stopping ventilation: 


Allegion UK     


Why ventilation matters Buildings that don’t breathe properly can become health hazards. Poor indoor


air quality, from elevated CO to VOCs emitted by everyday materials, contributes to headaches, respiratory irritation and dips in concentration and productivity. Inadequate ventilation is a particular concern in offices, classrooms, plant rooms and other enclosed spaces where people spend long periods of time. Door louvres are a straightforward,


effective way to improve air circulation, helping to reduce moisture, dispersing pollutants and supporting temperature control. But where air can pass, so can smoke and flame. That’s why a conventional louvre is not suitable for fire-rated doors. Iain Banks, Product Marketing Manager at Allegion UK, commented: “When you need airflow and fire protection in the same opening, a fire block louvre is the sensible and compliant option for your


steel fire doors. Metal louvres will provide the ventilation you need in offices, classrooms, plant rooms, stores and other areas, but the Zero FBLS Fire Block Louvre System assures that ventilation doesn’t become a route for smoke or fire.” Balancing air movement and fire safety The ideal solution for both factory-fitting and retrofit applications, the FBLS Fire Block Louvre System accommodates door thicknesses from 29mm upwards and provides a 40% free area for effective airflow. At the centre of the FBLS is an intumescent fire block, which, under high temperatures, expands to seal the opening, choking off the passage of fire and cold smoke, while the louvre remains unobtrusive in everyday use. The result is a practical, compliant solution for fire-rated doors that also require ventilation. Iain continues: “Our fire block louvre


systems are expertly manufactured in our workshop and are suitable for steel fire doors, providing up to 240 minutes of fire integrity. We have over 20 standard sizes available from stock and any size available to order from a minimum cut-out of 152 x 152mm.” To learn more visit zeroplus.co.uk


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