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F-C2
Legend
Installation 1 - Wet:
F1
Plaster/mortar/concrete filling
1
Fire damper (F-C2)
2
Connected metal ductwork
A2
Flexible duct coupling FCR-C2 / return plastic or metal valve (e.g. BALANCE-E)
3
Concrete/masonry/cellular concrete wall or ceiling
4
Flexible (plasterboard) wall
4a
2 layers of plasterboard fireproof plate type F, EN 520
4b
Vertical CW – profiles
4c
Horizontal CW – profiles
4d
Mineral wool; thickness/cubic density see picture.