GypsumHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe www.knauf.de
Knauf D 127 perforated drywall panel, ball-impact resistant
D 127 block-pattern perforation with square holes 12/25Q Design B5
PTB reference data
Original description
Knauf D 127 perforated drywall panel, ball-impact resistant
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 12.5 mm
Wall distance: 400 mm, 60 mm
Perforation: 13.0%
Hole size: 12 mm
Backing: 20 mm mineral fiber
Mounting: on sub-frame
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.64
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.65 | 0.80 | 0.70 | 0.65 | 0.50 | 0.50 |
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| Compare | Value | |
|---|---|---|
| 400 mm | αw0.64 | |
| 60 mm | αw0.54 |
Weight / density: <15 kg / m²
Dimensions: 1200 mm x 2400 mm