Fire-resisting door sets and walls must be fitted with dampers or air transfer grilles to aid fire and smoke containment. In normal, everyday circumstances, air ventilation is required between adjacent rooms and transfer grilles facilitate that free movement of air. However, when exposed to heat in the event of a
fire, grilles swell to many times their original thickness to form a barrier and restrict passage of flames and smoke.
Grilles are available in a silver finish as standard but get in touch about white and primed finishes, which are available on request.
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