Standard vision intumescent air transfer grille for walls, doors, and rectangular ventilation ducts.
Can be used to provide resistance to fire and hot smoke of up to 60 minutes in doors and walls.
Lorient Air Transfer Vision Grilles LVV40
Excellent airflow characteristics which result in silent efficient operation in normal use.
Complete seal achieved in approximately five minutes when tested in accordance with BS 476: 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.