MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 139
Isover GEMA metal cassette ceiling with mineral fiber absorber
Metal cassette ceiling – System GEMA
PTB reference data
Original description
Isover GEMA metal cassette ceiling with mineral fiber absorber
Material properties
Manufacturer: Saint-Gobain Isover G+H AG
Thickness: approx. 20.5 mm
Wall distance: 300 mm
Perforation: approx. 20%
Hole size: 2.6 mm
Backing: 20 mm mineral fiber panels
Surface: perforated metal sheet, steel sheet
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.76
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.70 | 0.75 | 0.85 | 0.95 | 1.00 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Method (354): Measured
