* Specifications comply with ASTM C 534-08

Note :

* Figures show the average values obtained by the world well-known testing institutes.
** At temp. under -57°C MAXFLEX ® becomes hard, but it doesn't affect thermal conductivity nor water vapor permeability.
*** Water vapor permeability test was done under test method ASTM E96 dehydrate test method at 37.8 °C

Sound Absorption Coefficient at Frequency

Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
1" (25 mm.) 0.295 0.265 0.755 0.263 0.408 0.448 0.40

Sound Transmission Class (STC)

Thickness STC Class
1" (25 mm.) 25
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