Ceilings

Damper installation system approved for ceilings.

System Number	Building Element	Product	Max Size	FRL	System Detail	Approved Reference
Ceiling 1	60/60/60 RISF Plasterboard ceiling	LVH44	500mm x 500mm	60/60/60 RISF 60 min	Lightweight clad plenum box	BRANZ 4581
Ceiling 3	60/60/60 RISF Plasterboard ceiling	LVH44C Circular	150mm diameter	60/60/60 RISF 60 min	Ceiling installation suitable for in-line fans	BRANZ FP5859

FRL: 60/60/60 RISF 60 min
Standard Version: AS1530.4 2014