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en Installation instructions
Forced ventilation – adjustment diagram
Static pressure drop
Existing opening of the reducing disc
L
= The A-measured sound pressure level at 10 m² sabin
pA
L
= The A-measured sound pressure level relative to 1 pW
WA
K1
K-factor
2.41
16
Cut-away rings
K2
K3
2.82
3.24
Without reducing disc
Airflow
K4
K5
3.76
4.31
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