Acoustic, smoke & fire containment systems

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Fire and smoke resistant damper/intumescent air transfer grilles

Air movement in a building is important. Stale air is bad for both the building and its users - so to ensure good ventilation, grilles are fitted into walls and some doors; and ductwork keeps fresh air circulating.

But wherever air moves, fire and smoke can travel too. Where ductwork passes through different areas of a building, it provides an easy path for fire and smoke to spread.

Our intumescent grilles and fire dampers combine air movement with fire protection. In everyday use, air can pass freely through the grilles to allow good ventilation. In a fire, the intumescent expands, fusing the grille into a solid block that stops fire spreading.

Intumescent dampers maintain fire compartmentation. So wherever ventilation is needed through a fire-resisting wall, a fire damper should be fitted. Where ductwork runs through that wall, a fire damper needs to be fitted inside the ductwork at that point.

Smoke protection is also vital. We offer a range of intumescent grilles and dampers with an added smoke control shutter: our Talkback system. Linked to the fire alarm, the shutter closes at the first sign of a fire, stopping fast-moving cold smoke from passing through the grille.

Click here to download our fire & smoke resistant dampers / air transfer grilles brochure.


Non-vision style grilles – LVN20 and LVN25 Non-vision intumescent air transfer grille. Can be used to provide resista... Read more
CE Intumescent Acoustic Acrylic Sealant CE intumescent sealant is suitable for: use as a linear gap seal for gaps ... Read more
Vision style grilles – LVC40 and LVV40 Standard vision intumescent air transfer grille for walls, doors and rectangular o... Read more
High performance vision style grilles – LVH44 and LVHC44 Lorient LVH high performance grilles are manufactured using Z275 grade galvanised ... Read more
High performance vision style damper for ducts - LVH54 Lorient LVH high performance grilles are manufactured using Z275 grade galvanised ... Read more
Cassette type damper - LVHCTD Lorient’s Cassette Type Damper allows simple and rapid duct installation in ... Read more
Talkback damper/shutter control system All ducts and airways in doors and walls can be protected against fire and hot smo... Read more
Intumescent sealant Lorient intumescent sealant is a versatile seal solution to fill gaps and movement... Read more