Manufacturer

Lindner Group

Lindner Group, Arnstorf: metal ceilings, heating and cooling ceilings, raised floors, wall and ceiling linings and the MUTE+ sound absorber line.

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Documents

Fire protection Brochure FIREwood Datasheet FIREwood

FIREwood acoustic wall lining

Name: FIREwood acoustic wall lining
Brand: Lindner Group

Description

Wall lining made of a calcium sulphate composite board with real wood veneer. Micro-perforation or grooving with acoustic fleece determine the absorption. Recycled content 100 per cent in the carrier board.

Technical data

Material: Calcium sulphate composite board of gypsum fibre

Surface: Real wood veneer, all natural wood species selectable

Up to fire class: B-s1,d0 — optionally non-combustible A2 as a composite per DIN 4102-1

Certifications: Emissions assessment per EN 16516, emission class A (VOC, France), Indoor Air Comfort Gold

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 9 variants

α_w

0.70

Frequency values

α_p per ISO 11654

f (Hz)	125	250	500	1k	2k	4k
α_p	0.50	0.55	0.65	0.75	0.65	0.65

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Absorber class: C

Dimensions: 2.550 x 1.200 mm

Perforation: PE 8/8-3

Measured values as a table (9 measurements)

FIREwood acoustic wall lining: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	α_w	Absorber class	100 Hz	125 Hz	160 Hz	200 Hz	250 Hz	315 Hz	400 Hz	500 Hz	630 Hz	800 Hz	1000 Hz	1250 Hz	1600 Hz	2000 Hz	2500 Hz	3150 Hz	4000 Hz	5000 Hz
PE 8/8-3 · 70 mm	0.55	D	0.09	0.15	0.17	0.24	0.32	0.44	0.52	0.66	0.75	0.77	0.76	0.67	0.57	0.49	0.43	0.43	0.44	0.45
PE 8/8-3 · 200 mm	0.60	C	0.52	0.41	0.54	0.58	0.70	0.75	0.72	0.76	0.68	0.66	0.53	0.59	0.57	0.52	0.49	0.49	0.49	0.51
PE 8/8-3 · 500 mm	0.65	C	0.66	0.59	0.77	0.65	0.78	0.72	0.63	0.71	0.67	0.65	0.63	0.61	0.58	0.57	0.55	0.54	0.53	0.60
PE 8/8-3 · 200 mm · 20 mm	0.65	C	0.57	0.40	0.57	0.55	0.62	0.66	0.63	0.67	0.63	0.66	0.69	0.70	0.64	0.59	0.55	0.56	0.61	0.64
PE 8/8-3 · 500 mm · 20 mm	0.70	C	0.54	0.44	0.55	0.50	0.59	0.58	0.59	0.71	0.71	0.75	0.77	0.73	0.69	0.63	0.60	0.61	0.66	0.69
PE 8/8-3 · 70 mm · 20 mm	0.65	C	0.22	0.24	0.38	0.50	0.54	0.68	0.70	0.76	0.75	0.72	0.69	0.60	0.56	0.54	0.50	0.52	0.58	0.61
PE 8/8-3 · 70 mm · 30 mm	0.45	D	0.17	0.20	0.33	0.48	0.65	0.82	0.88	0.92	0.81	0.75	0.59	0.50	0.43	0.38	0.34	0.32	0.33	0.40
PE 8/8-3 · 200 mm · 30 mm	0.55	D	0.37	0.47	0.47	0.45	0.57	0.51	0.55	0.54	0.56	0.52	0.53	0.53	0.50	0.49	0.51	0.52	0.56	0.60
PE 8/8-3 · 70 mm · 50 mm	0.50	D	0.23	0.28	0.40	0.55	0.68	0.73	0.76	0.75	0.75	0.73	0.65	0.59	0.53	0.44	0.40	0.38	0.38	0.47

Measured values as a table (9 measurements)

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Last updated: 14/09/2026

		Value
500 mm	20 mm	α_w0.70
500 mm	—	α_w0.65
200 mm	20 mm	α_w0.65
70 mm	20 mm	α_w0.65
200 mm	—	α_w0.60
70 mm	—	α_w0.55
200 mm	30 mm	α_w0.55
70 mm	50 mm	α_w0.50
70 mm	30 mm	α_w0.45