Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Ultralite
Original description
Fiberglass duct liner with surface coating
ISO 354 – reverberation chamber· 18 variants
αp per ISO 11654
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| Compare | Value | ||
|---|---|---|---|
| 2 inches | 25 mm | αw0.83 | |
| 2 inches | 25 mm | αw0.82 | |
| 2 inches | 0 | αw0.82 | |
| 2 inches | 25 mm | αw0.79 | |
| 2 inches | 0 | αw0.76 | |
| 1 1/2 inch | 25 mm | αw0.75 | |
| 1 1/2 inch | 25 mm | αw0.74 | |
| 2 inches | 0 | αw0.71 | |
| 1 1/2 inch | 0 | αw0.71 | |
| 1 1/2 inch | 25 mm | αw0.70 | |
| 1 1/2 inch | 0 | αw0.69 | |
| 1 1/2 inch | 0 | αw0.66 | |
| 1 inch | 25 mm | αw0.65 | |
| 1 inch | 25 mm | αw0.62 | |
| 1 inch | 25 mm | αw0.61 | |
| 1 inch | 0 | αw0.57 | |
| 1 inch | 0 | αw0.56 | |
| 1 inch | 0 | αw0.54 |
Weight / density: 0.5 lb/ft²
Dimensions: roll
