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 Datasheet LMD-L 601 Datasheet LMD-L 607 Datasheet LMD-L 608 Datasheet LMD-L 609 Datasheet acoustic insert Insula Datasheet acoustic insert Acustica

Baffle ceiling LMD-L

Name: Baffle ceiling LMD-L
Brand: Lindner Group

Description

Open metal baffle ceiling of galvanised sheet steel. Slat width, slat height and axis spacing determine the absorption together with acoustic fleece and insert. Recycled content 24 percent.

Technical data

Material: Galvanised steel sheet

Surface: Powder coating COLOURline, ARTline décor, MOODline deep matt (LMD-L 608)

Up to fire class: A2-s1,d0

Certifications: CE per EN 13964, EPD per EN 15804, TAIM Technical Manual for Metal Ceilings, VOC emission class A+, Indoor Air Comfort Gold, Oeko-Tex Standard 100 (Acustica acoustic insert)

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 22 variants

α_w

0.75

Frequency values

α_p per ISO 11654

f (Hz)	125	250	500	1k	2k	4k
α_p	0.60	0.50	0.85	0.85	0.70	0.70

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				Value
Rv 2,0 - 20	515 mm	Lamelle 500 x 100 mm, axis spacing 500 mm	100 mm	α_w0.75
Rv 2,0 - 20	515 mm	Lamelle 500 x 80 mm, axis spacing 500 mm	80 mm	α_w0.75
Rv 1,8 - 20	310 mm	Lamelle 300 x 55 mm, axis spacing 200 mm	50 mm Insula A2	α_w0.70
Rv 2,0 - 20	515 mm	Lamelle 500 x 100 mm, axis spacing 750 mm	100 mm	α_w0.70
Rv 2,0 - 20	300 mm	Lamelle 300 x 40 mm, axis spacing 200 mm	30 mm Acustica	α_w0.70
Rv 1,8 - 20	310 mm	Lamelle 300 x 50 mm, axis spacing 200 mm	40 mm Insula A2	α_w0.65
Rv 2,0 - 20	515 mm	Lamelle 500 x 80 mm, axis spacing 750 mm	80 mm	α_w0.65
Rv 2,0 - 20	247 mm	Lamelle 245 x 55 mm, axis spacing 300 mm	50 mm	α_w0.65
Rv 2,0 - 20	200 mm	Lamelle 200 x 40 mm, axis spacing 200 mm	30 mm Acustica	α_w0.65
Rv 2,0 - 20	300 mm	Lamelle 300 x 40 mm, axis spacing 300 mm	30 mm Acustica	α_w0.65
Rv 1,8 - 20	180 mm	Lamelle 150 x 35 mm, axis spacing 200 mm	30 mm	α_w0.60
Rv 1,8 - 20	310 mm	Lamelle 300 x 55 mm, axis spacing 300 mm	50 mm Insula A2	α_w0.60
Rv 2,0 - 20	200 mm	Lamelle 200 x 40 mm, axis spacing 300 mm	30 mm Acustica	α_w0.60
Rv 2,0 - 20	247 mm	Lamelle 245 x 35 mm, axis spacing 300 mm	30 mm	α_w0.55
Rv 1,8 - 20	310 mm	Lamelle 300 x 35 mm, axis spacing 200 mm	30 mm Insula A2	α_w0.55
Rv 2,0 - 20	300 mm	Lamelle 300 x 40 mm, axis spacing 600 mm	30 mm Acustica	α_w0.55
Rv 2,0 - 20	247 mm	Lamelle 245 x 30 mm, axis spacing 300 mm	20 mm	α_w0.50
Rv 2,0 - 20	247 mm	Lamelle 245 x 35 mm, axis spacing 600 mm	30 mm	α_w0.50
Rv 2,0 - 20	247 mm	Lamelle 245 x 55 mm, axis spacing 600 mm	50 mm	α_w0.50
Rv 2,0 - 20	200 mm	Lamelle 200 x 40 mm, axis spacing 600 mm	30 mm Acustica	α_w0.50
Rv 1,8 - 20	310 mm	Lamelle 300 x 35 mm, axis spacing 300 mm	30 mm Insula A2	α_w0.45
Rv 2,0 - 20	247 mm	Lamelle 245 x 30 mm, axis spacing 600 mm	20 mm	α_w0.40

Absorber class: C

Test report: H200317/2c_rev00

Measured values as a table (22 measurements)

Baffle ceiling LMD-L: 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
Rv 2,0 - 20 · 247 mm · Lamelle 245 x 30 mm, axis spacing 300 mm	0.50	D	0.10	0.26	0.32	0.32	0.40	0.40	0.40	0.39	0.44	0.49	0.59	0.65	0.70	0.72	0.69	0.68	0.69	0.69
Rv 2,0 - 20 · 247 mm · Lamelle 245 x 30 mm, axis spacing 600 mm	0.40	D	0.07	0.20	0.22	0.25	0.34	0.36	0.33	0.33	0.34	0.35	0.40	0.43	0.48	0.48	0.48	0.48	0.50	0.51
Rv 2,0 - 20 · 247 mm · Lamelle 245 x 35 mm, axis spacing 300 mm	0.55	D	0.04	0.22	0.39	0.50	0.47	0.46	0.42	0.39	0.48	0.60	0.73	0.75	0.77	0.75	0.73	0.71	0.69	0.67
Rv 2,0 - 20 · 247 mm · Lamelle 245 x 35 mm, axis spacing 600 mm	0.50	D	0.04	0.15	0.27	0.40	0.41	0.42	0.40	0.36	0.43	0.46	0.52	0.54	0.54	0.54	0.52	0.51	0.48	0.47
Rv 2,0 - 20 · 247 mm · Lamelle 245 x 55 mm, axis spacing 600 mm	0.50	D	0.06	0.24	0.36	0.49	0.50	0.51	0.49	0.46	0.48	0.51	0.55	0.53	0.54	0.50	0.47	0.43	0.39	0.37
Rv 1,8 - 20 · 180 mm · Lamelle 150 x 35 mm, axis spacing 200 mm	0.60	C	0.07	0.12	0.33	0.49	0.50	0.61	0.59	0.52	0.49	0.50	0.56	0.68	0.76	0.71	0.75	0.70	0.67	0.64
Rv 1,8 - 20 · 310 mm · Lamelle 300 x 50 mm, axis spacing 200 mm	0.65	C	0.27	0.40	0.55	0.49	0.48	0.44	0.44	0.56	0.76	0.90	0.82	0.89	0.86	0.80	0.80	0.79	0.78	0.75
Rv 1,8 - 20 · 310 mm · Lamelle 300 x 35 mm, axis spacing 300 mm	0.45	D	0.15	0.16	0.27	0.35	0.37	0.31	0.26	0.32	0.46	0.58	0.62	0.67	0.74	0.75	0.76	0.77	0.79	0.82
Rv 1,8 - 20 · 310 mm · Lamelle 300 x 55 mm, axis spacing 200 mm	0.70	C	0.21	0.52	0.84	0.60	0.57	0.47	0.43	0.55	0.76	0.86	0.76	0.84	0.82	0.80	0.78	0.78	0.78	0.76
Rv 1,8 - 20 · 310 mm · Lamelle 300 x 55 mm, axis spacing 300 mm	0.60	C	0.25	0.30	0.53	0.62	0.58	0.40	0.38	0.46	0.66	0.78	0.82	0.79	0.82	0.79	0.77	0.71	0.67	0.55
Rv 2,0 - 20 · 515 mm · Lamelle 500 x 100 mm, axis spacing 750 mm	0.70	C	0.56	0.52	0.55	0.35	0.39	0.59	0.67	0.78	0.76	0.77	0.72	0.70	0.64	0.64	0.66	0.67	0.71	0.79
Rv 2,0 - 20 · 515 mm · Lamelle 500 x 100 mm, axis spacing 500 mm	0.75	C	0.72	0.57	0.54	0.37	0.48	0.59	0.77	0.93	0.87	0.85	0.86	0.78	0.75	0.71	0.72	0.70	0.69	0.64
Rv 2,0 - 20 · 515 mm · Lamelle 500 x 80 mm, axis spacing 750 mm	0.65	C	0.47	0.43	0.50	0.32	0.38	0.52	0.62	0.74	0.76	0.77	0.76	0.69	0.68	0.66	0.63	0.61	0.58	0.61
Rv 2,0 - 20 · 515 mm · Lamelle 500 x 80 mm, axis spacing 500 mm	0.75	C	0.64	0.53	0.54	0.37	0.45	0.57	0.72	0.85	0.84	0.86	0.87	0.83	0.78	0.73	0.72	0.70	0.67	0.70
Rv 1,8 - 20 · 310 mm · Lamelle 300 x 35 mm, axis spacing 200 mm	0.55	D	0.21	0.21	0.41	0.44	0.42	0.39	0.34	0.41	0.56	0.70	0.69	0.79	0.78	0.78	0.84	0.84	0.84	0.84
Rv 2,0 - 20 · 247 mm · Lamelle 245 x 55 mm, axis spacing 300 mm	0.65	C	0.10	0.36	0.53	0.62	0.60	0.59	0.56	0.52	0.56	0.66	0.78	0.75	0.74	0.68	0.65	0.61	0.59	0.51
Rv 2,0 - 20 · 200 mm · Lamelle 200 x 40 mm, axis spacing 600 mm	0.50	D	–	0.10	0.22	0.33	0.37	0.46	0.44	0.42	0.45	0.46	0.48	0.55	0.53	0.51	0.51	0.50	0.48	0.47
Rv 2,0 - 20 · 200 mm · Lamelle 200 x 40 mm, axis spacing 300 mm	0.60	C	–	0.13	0.33	0.46	0.47	0.56	0.54	0.49	0.50	0.53	0.60	0.75	0.72	0.73	0.73	0.69	0.67	0.67
Rv 2,0 - 20 · 200 mm · Lamelle 200 x 40 mm, axis spacing 200 mm	0.65	C	0.11	0.17	0.41	0.54	0.51	0.61	0.58	0.51	0.49	0.54	0.72	0.84	0.81	0.79	0.82	0.80	0.78	0.73
Rv 2,0 - 20 · 300 mm · Lamelle 300 x 40 mm, axis spacing 600 mm	0.55	D	0.13	0.20	0.43	0.49	0.49	0.49	0.46	0.43	0.50	0.62	0.66	0.69	0.73	0.68	0.67	0.67	0.65	0.60
Rv 2,0 - 20 · 300 mm · Lamelle 300 x 40 mm, axis spacing 300 mm	0.65	C	0.17	0.27	0.55	0.54	0.53	0.46	0.45	0.51	0.65	0.79	0.85	0.87	0.91	0.87	0.89	0.90	0.85	0.81
Rv 2,0 - 20 · 300 mm · Lamelle 300 x 40 mm, axis spacing 200 mm	0.70	C	0.20	0.35	0.63	0.58	0.57	0.48	0.48	0.57	0.74	0.93	0.90	0.94	0.96	0.93	0.94	0.93	0.91	0.88

Measured values as a table (22 measurements)

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Last updated: 16/09/2026