GypsumHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe www.knauf.de
Knauf D 127 acoustic design panel, block-pattern round holes 8/18R, Design B5
D 127 block-pattern perforation w/ round holes 8/18R Design B5
PTB reference data
Original description
Knauf D 127 acoustic design panel, block-pattern round holes 8/18R, Design B5
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 12.5 mm
Wall distance: 60 mm, 400 mm
Perforation: 9.1%
Hole size: 8 mm
Mounting: on sub-frame
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.55
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.75 | 0.60 | 0.55 | 0.45 | 0.40 |
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| Compare | Value | |
|---|---|---|
| 400 mm | αw0.55 | |
| 60 mm | αw0.49 |
Weight / density: <15 kg / m²
Dimensions: 1224 mm x 2448 mm