pinta acoustic QUADROLINE expanded metal with PLANO A2

QUADROLINE

PTB reference data

Original description

Material properties

Manufacturer: pinta acoustic gmbh

Thickness: 0.4 in

Wall distance: 3.9 in, 7.9 in, 12 in, 20 in

Backing: PLANO A2

Application: closed ceiling, wall-to-wall solution

Reverberation chamber (ASTM C423 / ISO 354)· 4 variants

NRC

0.60

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.45	0.55	0.55	0.65	0.70	0.70

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NRC: 0.60 (derived from ISO 354 lab data)

Weight / density: 3,3 - 4,9 kg/m²

Dimensions: variabel

Measured values as a table (4 measurements)

pinta acoustic QUADROLINE expanded metal with PLANO A2: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	NRC	125 Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz
10 mm · 3,3 - 4,9 kg/m² · 100 mm	0.50	0.05	0.20	0.50	0.65	0.60	0.65
10 mm · 3,3 - 4,9 kg/m² · 200 mm	0.55	0.15	0.35	0.55	0.65	0.65	0.65
10 mm · 3,3 - 4,9 kg/m² · 300 mm	0.60	0.25	0.50	0.55	0.60	0.70	0.70
10 mm · 3,3 - 4,9 kg/m² · 500 mm	0.60	0.45	0.55	0.55	0.65	0.70	0.70

Measured values as a table (4 measurements)

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Last updated: 09/02/2026