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SPACING AROUND DAMPER INSTALLATIONS

Supporting construction

BS EN 1366-2:2015 section 7.3 states "the distance between the fire dampers shall not be less the 200mm."

Damper

casing

Wall opening

Multiple ducts in one large opening is not currently included in a harmonised standard, but this is being

investigated by standards committees.

200mm

minimum

Damper

casing

Wall opening

Surrounding construction

BS EN 1366-2:2015 section 13.6 states "minimum separation of 75mm between fire damper and a construction

element (wall /floor)."

75mm

minimum

Damper casing

Wall opening