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10 - TECHNICAL INFORMATION
Characteristics of the casing according to "EN 1886"
Classified characteristic
polyurethane foam mineral wool
Mechanical strength of the casing D1 D1
Air-tightness of casing - 400 Pa L1 L2
Air-tightness of casing + 700 Pa L1 L2
Filter bypass F9 F9
Transfer factor T2 T3
Heat bridge factor TB3 TB3
Frequency
Hz
125 250 500 1000 2000 4000 8000
Acoustic abatement
(polyurethane foam)
dB
6 11 12 14 13 29 36
Acoustic abatement
(mineral wool)
dB
11 14 15 20 20 28 36