MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Perforated metal ceiling panel backed with fiberglass
IAC Mark III
PTB reference data
Original description
Perforated metal ceiling panel backed with fiberglass
Material properties
Manufacturer: Industrial Acoustics Company
Thickness: 2 inches, 3 inches
Wall distance: 400 mm
Backing: fiberglass
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.92
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.65 | 0.70 | 1.00 | 1.10 | 1.05 | 1.10 |
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| Compare | Value | ||
|---|---|---|---|
| 2 inches | 1.8 lb/ft² | αw0.92 | |
| 3 inches | 3.1 lb/ft² | αw0.91 |
Dimensions: 24 x 48 inches
Distance: 400 mm
