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    The Model 5650 Drop lock type Fire Dampers from Bullock MFG

    Bullock MFG

    The Bullock Model 5650 Drop lock type Fire Dampers from Bullock MFG feature light weight construction and excellent closing ability.

    These fire dampers comply with AS1682.1-1990 and AS1668.1-1998 and are tested and certified for a four hour rating in a masonry wall or concrete slab. They also have a two hour rating in a steel stud plasterboard partition and a 3x16mm plasterboard partition.

    Features of 5650 Drop lock type Fire Dampers:

    • Light weight construction without welding ensures the integrity of the damper's galvanized coating.
    • Double action 301 stainless steel spring with blade dimples provide positive low-leakage shut off.
    • Side blade closure dampers available for specific building applications
    • Recessed angle design permits a raw edge easy duct attachment, with breakaway characteristics
    • Optional TDF/TDC flanges can be supplied to match 25mm or 35mm ductwork.

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