Lorient Intumescent Air Transfer Grilles are used to provide an answer to situations where ventilation is required in fire compartment walls or doors. They can be used for providing dampers in ductwork.

• Can be used to provide resistance to fire and hot smoke of up to 60 minutes in doors and walls.
• Excellent airflow characteristics which result in silent efficient operation in normal use.
• Complete seal achieved in approximately five minutes when tested in accordance with BS476 Parts 20/22
• Can be used with a cover grille for a neat finish and extra privacy.
• Allows bi-directional air flow.
• Simple to install.
• No maintenance required.
• Holds Certifire CF564 certification.