Galvanized expanded metal, with PLANO A2 (thickness = 20 mm), closed ceiling, wall-to-wall solution – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

Sound absorption

ISO 354 – reverberation chamber· 4 variants

αw

0.65

Frequency values

αp per ISO 11654

125 Hz

0.40

250 Hz

0.55

500 Hz

0.60

1000 Hz

0.75

2000 Hz

0.80

4000 Hz

0.80

Create a permanent free account — Access frequency bands, variants and export.

Free. No password required.

Compare		Value
	500 mm	αw0.65
	300 mm	αw0.60
	200 mm	αw0.56
	100 mm	αw0.53

Weight / density: 5,9 - 8,3 kg/m²

Dimensions: 2500 x 1250 mm

Data source

PTB reference data

Galvanized expanded metal, with PLANO A2 (thickness = 20 mm), closed ceiling, wall-to-wall solution

Material properties

Measurement data

Sound absorption

Frequency values