Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Permacote, coated, smooth duct liner
Linacoustic
PTB reference data
Original description
Permacote, coated, smooth duct liner
Material properties
Manufacturer: Manville
Thickness: 25.4 mm, 38.1 mm, 50.8 mm
Wall distance: 0 mm
Surface: coated, smooth
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.88
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.75 | 1.05 | 1.15 | 1.05 | 1.05 |
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| Compare | Value | ||
|---|---|---|---|
| 2 inches | 0.22 lb/ft² | αw0.88 | |
| 1 1/2 inch | 0.19 lb/ft² | αw0.78 | |
| 1 inch | 0.13 lb/ft² | αw0.63 |
Dimensions: roll
Distance: 0