https://www.architectureanddesign.com.au/editorial/product-news/LVH-intumescent-air-transfer-grilles-for-fire-door
LVH intumescent air transfer grilles for fire doors | Architecture & Design
The LVH intumescent air transfer grilles available from Lorient Pty Ltd are specifically designed for use in fire rated door assemblies where pressure relief...
transfer grillesfire doorsarchitecture designlvhair