Product description

The Bullock Model 4800 multi-blade type fire damper is designed to stop materials of combustion (fire) passing through air-conditioning and ventilation systems which penetrate fire rated masonry walls or concrete slabs.

The model complies with AS1668.1 and AS1682.1 and has been tested and certified by the C.S.I.R.O. for a 4 hour rating (FRL)