![CLIVET AQX CLA Series Installation, Use And Maintenance Manual Download Page 29](http://html1.mh-extra.com/html/clivet/aqx-cla-series/aqx-cla-series_installation-use-and-maintenance-manual_2625538029.webp)
29
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 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