Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Type 775
Original description
Armstrong Minatex surface-textured mineral fiber lay-in panel
ISO 354 – reverberation chamber· 2 variants
αp per ISO 11654
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| Compare | Value |
|---|---|
| αw0.56 | |
| αw0.52 |
Weight / density: 0.7 lb/ft²
Dimensions: 24 x 48 inches
Distance: 400 mm
