Physikalisch-Technische Bundesanstalt
Source: Herstellerangaben im Internet unter www.rigips.de, Stand April 01
Rigiton Big Quattro 42
Original description
Rigips Rigiton Big Quattro 42 gypsum board, square-hole perforated
ISO 354 – reverberation chamber
αp nach ISO 11654
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Method (354): Measured