GypsumHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe www.knauf.de
Knauf D 127 acoustic design panel, perforated gypsum board
D 127 block-pattern perforation with round holes 8/18R Design B5
PTB reference data
Original description
Knauf D 127 acoustic design panel, perforated gypsum board
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 12.5 mm
Wall distance: 400 mm, 60 mm
Perforation: 9.1%
Hole size: 8 mm
Backing: 20 mm mineral fiber
Application: ball-impact resistant
Mounting: on sub-frame
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.65
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.85 | 0.60 | 0.65 | 0.50 | 0.50 |
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| Compare | Value | |
|---|---|---|
| 400 mm | αw0.65 | |
| 60 mm | αw0.51 |
Weight / density: <15 kg / m²
Dimensions: 1224 mm x 2448 mm