Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 210
Perllit ceiling element with sound-absorbing filling – No. 3350
Original description
Knauf Perllit ceiling element No. 3350 with mineral fiber filling
ISO 354 – reverberation chamber· 2 variants
αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| 700 mm | αw0.59 | |
| 100 mm | αw0.50 |
Weight / density: ca. 19 kg / m²
Dimensions: Länge 625 mm, width 335 - 469 mm
