Manufacturer

Fural Systeme in Metall GmbH

Fural manufactures modular metal ceiling systems with outstanding acoustic performance. Every metal ceiling is an acoustic ceiling with additional functions such as fire protection, cooling, heating, hygiene or impact resistance. Certified to TAIM, with EPDs available for steel and aluminium systems.

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EPD

Fural Acoustic Baffle

Name: Fural Acoustic Baffle
Brand: Fural Systeme in Metall GmbH

Acoustic Baffle

EPD availableFree-hanging

Description

Vertical metal baffle for open ceiling installations, available in one-piece or two-piece versions. The acoustic performance can be tuned to the room by adjusting baffle height, baffle spacing, and suspension height. The structural ceiling and built-in services remain visible and accessible for maintenance at all times. At shallow viewing angles, the baffles also provide glare reduction; lighting can be integrated between or into the baffles. Can be combined with a cooling and heating function. Design flexibility through variation of height, arrangement, and colour. 74 tested configurations, baffle heights from 40 to 600 mm.

Technical data

Material: galvanized steel

Surface: RAL 9010, powder coating 60–70 μm

Up to fire class: A1 (DIN EN 13501-1)

Application: Acoustic baffle (one-piece / two-piece)

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 74 variants

Perforation

Size

Gap / cavity

Surface

NRC

0.90

Frequency values

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.65	0.85	0.85	0.85	0.95	0.90

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Perforation	Size	Gap / cavity	Test setup	Surface	Value
Rd 1,5-22%	12 in baffle height	24 in axis spacing	—	fleece	NRC0.90
Rd 1,5-22%	24 in baffle height	5.9 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.80
Rd 1,5-22%	24 in baffle height	5.9 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.80
Rd 1,5-22%	12 in baffle height	5.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.80
None (closed)	1.6 in baffle height	2 in axis spacing	—	without	NRC0.80
Rd 1,5-22%	8.7 in baffle height	5.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.75
Rd 1,5-22%	12 in baffle height	24 in axis spacing	—	fleece	NRC0.75
None (closed)	1.6 in baffle height	2 in axis spacing	—	without	NRC0.85
None (closed)	1.6 in baffle height	2 in axis spacing	—	without	NRC0.90
None (closed)	1.6 in baffle height	2 in axis spacing	—	without	NRC0.85
Rd 1,5-22%	12 in baffle height	5.9 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.70
Rd 1,5-22%	24 in baffle height	12 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.75
Rd 1,5-22%	24 in baffle height	12 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.70
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.65
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.65
Rd 1,5-22%	12 in baffle height	5.9 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.70
Rd 1,5-22%	8.7 in baffle height	5.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.60
Rd 1,5-22%	8.7 in baffle height	5.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.65
Rd 1,5-22%	12 in baffle height	12 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.65
Rd 1,5-22%	24 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.65
Rd 1,5-22%	24 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.65
Rd 0,9-14%	5.9 in baffle height	5.9 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.60
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.60
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.60
Rg 0,9-7%	5.9 in baffle height	5.9 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.60
Rg 1,5-11%	5.9 in baffle height	5.9 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.60
Rd 1,5-11%	5.9 in baffle height	5.9 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.60
Rd 1,5-22%	8.7 in baffle height	5.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.65
Rd 1,5-22%	8.7 in baffle height	5.9 in axis spacing	2 in mineral wool 45 kg/m³	fleece	NRC0.65
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in Melaminharzschaum, 9 kg/m³	fleece	NRC0.60
Rd 1,5-22%	5.9 in baffle height	12 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.55
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.55
Rg 2,5-16%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	2 in mineral wool 50 kg/m³	fleece	NRC0.55
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³ in PE film	fleece	NRC0.55
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in Melaminharzschaum, 9 kg/m³	without	NRC0.55
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 12-25 kg/m² in PE film SDE A2	fleece	NRC0.55
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 12-25 kg/m² in PE film SDE A2	without	NRC0.55
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.60
Rd 1,5-22%	12 in baffle height	12 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.60
Rg 0,7-4%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in sheep wool 28 kg/m³	fleece	NRC0.45
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.45
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	8.7 in baffle height	12 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.45
Rd 1,5-22%	2 in baffle height	3.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.2 in mineral wool 100 kg/m³ in PE film	fleece	NRC0.50
Rd 1,5-22%	7.9 in baffle height	5.9 in axis spacing	80x1.6 in mineral wool 45 kg/m³ in PE film	without	NRC0.50
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	40x1.6 in mineral wool 45 kg/m³ in PE film at baffle with ALP andere Baffeln with 150x1.6 in mineral wool 45 kg/m³ in PE film	without	NRC0.55
Rd 1,5-22%	5.9 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.35
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	2 in mineral wool 45 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	2 in mineral wool 50 kg/m³	fleece	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	2 in mineral wool 50 kg/m³	fleece	NRC0.45
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.45
Rd 1,5-22%	12 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.45
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	—	fleece	NRC0.50
Rd 1,5-22%	5.9 in baffle height	5.9 in axis spacing	80x1.6 in mineral wool 45 kg/m³ in PE film	without	NRC0.50
Rd 1,5-22%	12 in baffle height	24 in axis spacing	150x1.6 in mineral wool 45 kg/m³ in PE film	without	NRC0.40
Rd 1,5-22%	5.9 in baffle height	12 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.45
Rd 1,5-22%	12 in baffle height	24 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.40
Rd 1,5-22%	5.9 in baffle height	24 in axis spacing	2x0.8 in mineral wool 35 kg/m³ fleece-laminated on one side	without	NRC0.35
Rd 1,5-22%	5.9 in baffle height	24 in axis spacing	1.6 in PE-polyester wool 20 kg/m³	without	NRC0.35
Rd 1,5-22%	5.9 in baffle height	24 in axis spacing	2x0.8 in PE-polyester wool 20 kg/m³	without	NRC0.35
Rd 1,5-22%	8.7 in baffle height	24 in axis spacing	2 in mineral wool 45 kg/m³	fleece	NRC0.40
Rd 1,5-22%	2 in baffle height	5.9 in axis spacing	1.6 in mineral wool 45 kg/m³	fleece	NRC0.40
Rd 1,5-22%	7.9 in baffle height	5.9 in axis spacing	40x1.6 in mineral wool 45 kg/m³ in PE film über der oberen RR	without	NRC0.45
Rd 1,5-22%	12 in baffle height	24 in axis spacing	without	fleece	NRC0.35
Rd 1,5-22%	12 in baffle height	24 in axis spacing	without	fleece	NRC0.35
Rd 1,5-22%	5.9 in baffle height	24 in axis spacing	1.6 in mineral wool 50 kg/m³	fleece	NRC0.30

Test report: B105629_113_PBE_1D

NRC: 0.90 (derived from ISO 354 lab data)

Institute: MFPA Leipzig

Dimensions: 1.6 in thickness

Measured values as a table (74 measurements)

Fural Acoustic Baffle: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	NRC	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
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.65	0.06	0.19	0.21	0.33	0.47	0.49	0.60	0.59	0.52	0.58	0.64	0.79	0.85	0.81	0.82	0.77	0.73	0.68
Rd 1,5-22% · 150 mm baffle height · 300 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.50	0.03	0.12	0.12	0.23	0.35	0.34	0.48	0.51	0.49	0.53	0.53	0.62	0.67	0.69	0.69	0.66	0.62	0.60
Rd 1,5-22% · 150 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.35	0.02	0.06	0.07	0.13	0.22	0.26	0.35	0.38	0.43	0.47	0.42	0.45	0.45	0.46	0.45	0.45	0.44	0.42
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.60	0.07	0.16	0.21	0.26	0.30	0.30	0.33	0.44	0.56	0.71	0.73	0.83	0.85	0.87	0.84	0.79	0.72	0.65
Rd 1,5-22% · 150 mm baffle height · 300 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.45	0.04	0.11	0.11	0.18	0.20	0.19	0.23	0.29	0.39	0.57	0.58	0.65	0.73	0.69	0.70	0.66	0.63	0.58
Rd 1,5-22% · 150 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.30	0.02	0.06	0.06	0.10	0.14	0.14	0.17	0.18	0.26	0.39	0.43	0.48	0.48	0.45	0.45	0.45	0.43	0.40
Rd 1,5-22% · 300 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.70	0.17	0.32	0.48	0.52	0.48	0.45	0.53	0.65	0.81	0.89	0.84	0.87	0.85	0.84	0.86	0.80	0.77	0.70
Rd 1,5-22% · 300 mm baffle height · 300 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.65	0.11	0.24	0.37	0.48	0.43	0.38	0.42	0.45	0.62	0.77	0.82	0.80	0.82	0.80	0.83	0.78	0.74	0.71
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.55	0.06	0.19	0.27	0.39	0.43	0.39	0.39	0.41	0.49	0.59	0.64	0.65	0.66	0.64	0.66	0.64	0.60	0.60
Rd 1,5-22% · 300 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.70	0.17	0.19	0.25	0.28	0.35	0.36	0.56	0.70	0.77	0.86	0.86	0.87	0.83	0.85	0.87	0.81	0.75	0.71
Rd 1,5-22% · 300 mm baffle height · 300 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.60	0.11	0.15	0.15	0.23	0.27	0.28	0.41	0.52	0.64	0.74	0.80	0.82	0.81	0.82	0.81	0.78	0.76	0.69
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.50	0.07	0.12	0.15	0.21	0.20	0.20	0.31	0.43	0.51	0.60	0.67	0.69	0.65	0.65	0.62	0.61	0.58	0.53
Rd 1,5-22% · 600 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.80	0.38	0.36	0.36	0.39	0.55	0.71	0.81	0.88	0.88	0.86	0.90	0.91	0.85	0.86	0.84	0.82	0.75	0.70
Rd 1,5-22% · 600 mm baffle height · 300 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.75	0.31	0.28	0.30	0.31	0.40	0.51	0.72	0.76	0.86	0.88	0.91	0.92	0.88	0.87	0.86	0.85	0.83	0.75
Rd 1,5-22% · 600 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.65	0.25	0.25	0.25	0.24	0.31	0.40	0.59	0.67	0.74	0.81	0.83	0.85	0.81	0.80	0.79	0.78	0.76	0.72
Rd 1,5-22% · 600 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.80	0.33	0.29	0.32	0.43	0.65	0.70	0.72	0.84	0.91	0.87	0.87	0.90	0.90	0.83	0.84	0.78	0.75	0.69
Rd 1,5-22% · 600 mm baffle height · 300 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.70	0.21	0.21	0.21	0.24	0.41	0.53	0.61	0.74	0.88	0.83	0.87	0.89	0.89	0.84	0.86	0.84	0.79	0.74
Rd 1,5-22% · 600 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.65	0.11	0.14	0.18	0.21	0.31	0.40	0.52	0.64	0.76	0.79	0.81	0.80	0.84	0.78	0.78	0.74	0.72	0.67
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.55	0.11	0.23	0.34	0.41	0.46	0.42	0.40	0.41	0.51	0.58	0.62	0.63	0.64	0.66	0.62	0.61	0.57	0.51
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · without · fleece	0.35	0.11	0.20	0.27	0.34	0.38	0.33	0.31	0.28	0.28	0.29	0.34	0.34	0.37	0.40	0.40	0.41	0.40	0.36
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · without · fleece	0.35	0.09	0.18	0.26	0.31	0.37	0.31	0.30	0.26	0.27	0.29	0.34	0.34	0.35	0.39	0.39	0.40	0.39	0.32
Rg 2,5-16% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.50	0.10	0.19	0.30	0.35	0.43	0.41	0.40	0.40	0.50	0.59	0.62	0.62	0.63	0.64	0.62	0.60	0.55	0.53
Rg 0,7-4% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.50	0.10	0.18	0.28	0.36	0.42	0.40	0.40	0.39	0.48	0.57	0.60	0.57	0.60	0.58	0.55	0.54	0.50	0.45
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm sheep wool 28 kg/m³ · fleece	0.45	0.16	0.27	0.35	0.43	0.47	0.40	0.38	0.37	0.41	0.44	0.49	0.51	0.52	0.56	0.55	0.56	0.54	0.52
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.45	0.16	0.28	0.35	0.42	0.47	0.40	0.38	0.35	0.42	0.46	0.49	0.53	0.53	0.55	0.55	0.57	0.55	0.52
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 50 mm mineral wool 50 kg/m³ · fleece	0.55	0.11	0.21	0.35	0.41	0.45	0.43	0.44	0.40	0.56	0.64	0.66	0.66	0.66	0.65	0.64	0.65	0.60	0.56
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.50	0.11	0.18	0.30	0.35	0.44	0.41	0.41	0.36	0.49	0.58	0.61	0.64	0.62	0.60	0.58	0.55	0.51	0.45
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.50	0.10	0.20	0.32	0.36	0.43	0.41	0.41	0.37	0.50	0.57	0.61	0.62	0.62	0.61	0.60	0.58	0.53	0.51
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.50	0.10	0.20	0.32	0.36	0.44	0.41	0.41	0.37	0.50	0.58	0.61	0.64	0.64	0.62	0.62	0.61	0.57	0.52
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.40	0.07	0.15	0.30	0.40	0.35	0.30	0.31	0.23	0.29	0.35	0.40	0.45	0.50	0.54	0.56	0.60	0.57	0.52
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ in PE film · fleece	0.55	0.19	0.27	0.34	0.43	0.50	0.42	0.41	0.41	0.51	0.56	0.60	0.65	0.66	0.65	0.62	0.61	0.57	0.51
Rd 0,9-14% · 150 mm baffle height · 150 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.60	0.11	0.27	0.31	0.43	0.51	0.55	0.59	0.54	0.52	0.54	0.57	0.72	0.84	0.75	0.67	0.67	0.63	0.63
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.60	0.11	0.28	0.30	0.43	0.51	0.56	0.59	0.56	0.53	0.55	0.58	0.73	0.85	0.78	0.70	0.67	0.64	0.65
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.60	0.11	0.29	0.31	0.42	0.51	0.57	0.60	0.57	0.54	0.55	0.58	0.73	0.83	0.76	0.71	0.69	0.63	0.62
Rg 0,9-7% · 150 mm baffle height · 150 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.60	0.12	0.28	0.31	0.41	0.50	0.56	0.60	0.55	0.52	0.51	0.56	0.70	0.80	0.71	0.64	0.62	0.59	0.59
Rd 1,5-22% · 150 mm baffle height · 600 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.35	0.11	0.14	0.16	0.22	0.25	0.31	0.33	0.38	0.39	0.42	0.40	0.42	0.44	0.40	0.40	0.40	0.42	0.43
Rg 1,5-11% · 150 mm baffle height · 150 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.60	0.15	0.27	0.30	0.40	0.48	0.58	0.57	0.55	0.51	0.54	0.58	0.72	0.84	0.76	0.69	0.68	0.67	0.69
Rd 1,5-11% · 150 mm baffle height · 150 mm axis spacing · 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without	0.60	0.13	0.27	0.30	0.40	0.46	0.56	0.56	0.54	0.49	0.53	0.59	0.71	0.84	0.74	0.69	0.68	0.66	0.69
Rd 1,5-22% · 150 mm baffle height · 600 mm axis spacing · 40 mm PE-polyester wool 20 kg/m³ · without	0.35	0.14	0.14	0.14	0.21	0.25	0.30	0.33	0.37	0.36	0.39	0.38	0.39	0.40	0.36	0.36	0.37	0.37	0.39
Rd 1,5-22% · 150 mm baffle height · 600 mm axis spacing · 2x20 mm PE-polyester wool 20 kg/m³ · without	0.35	0.13	0.10	0.13	0.22	0.25	0.31	0.32	0.37	0.36	0.39	0.38	0.39	0.41	0.37	0.37	0.39	0.37	0.42
Rd 1,5-22% · 220 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.60	0.17	0.30	0.37	0.36	0.34	0.35	0.47	0.67	0.78	0.75	0.76	0.71	0.64	0.66	0.61	0.57	0.54	0.52
Rd 1,5-22% · 220 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.65	0.17	0.29	0.34	0.34	0.33	0.35	0.47	0.65	0.75	0.76	0.81	0.77	0.76	0.71	0.68	0.66	0.65	0.65
Rd 1,5-22% · 220 mm baffle height · 300 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.50	0.12	0.22	0.21	0.25	0.28	0.28	0.33	0.46	0.59	0.62	0.69	0.68	0.68	0.64	0.64	0.63	0.60	0.60
Rd 1,5-22% · 220 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.65	0.17	0.28	0.31	0.31	0.32	0.35	0.47	0.66	0.77	0.78	0.83	0.79	0.76	0.71	0.70	0.65	0.66	0.66
Rd 1,5-22% · 220 mm baffle height · 600 mm axis spacing · 50 mm mineral wool 45 kg/m³ · fleece	0.40	0.05	0.11	0.13	0.15	0.21	0.18	0.23	0.30	0.46	0.53	0.58	0.57	0.55	0.54	0.53	0.50	0.49	0.48
Rd 1,5-22% · 220 mm baffle height · 150 mm axis spacing · 50 mm mineral wool 45 kg/m³ · fleece	0.65	0.17	0.27	0.29	0.28	0.31	0.33	0.46	0.63	0.74	0.76	0.83	0.78	0.78	0.73	0.70	0.68	0.68	0.69
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 50 mm mineral wool 45 kg/m³ · fleece	0.50	0.10	0.24	0.21	0.23	0.23	0.20	0.29	0.44	0.55	0.64	0.69	0.64	0.65	0.63	0.61	0.60	0.60	0.60
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 50 mm mineral wool 50 kg/m³ · fleece	0.50	0.10	0.21	0.20	0.22	0.22	0.21	0.30	0.45	0.56	0.66	0.69	0.65	0.67	0.63	0.62	0.60	0.59	0.61
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 50 mm mineral wool 50 kg/m³ · fleece	0.45	0.04	0.12	0.08	0.16	0.20	0.26	0.41	0.43	0.53	0.62	0.61	0.61	0.61	0.59	0.56	0.56	0.52	0.54
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.45	0.04	0.13	0.07	0.15	0.18	0.22	0.36	0.37	0.49	0.58	0.59	0.61	0.62	0.59	0.57	0.58	0.55	0.53
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.45	0.02	0.03	0.05	0.15	0.25	0.32	0.34	0.41	0.47	0.55	0.61	0.62	0.64	0.60	0.59	0.60	0.53	0.56
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 50 kg/m³ · fleece	0.45	0.00	0.02	0.05	0.20	0.27	0.31	0.35	0.38	0.47	0.57	0.62	0.63	0.62	0.62	0.61	0.60	0.56	0.56
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.65	0.16	0.25	0.36	0.42	0.46	0.45	0.51	0.62	0.76	0.81	0.76	0.69	0.70	0.71	0.66	0.61	0.57	0.56
Rd 1,5-22% · 220 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.75	0.25	0.44	0.55	0.51	0.49	0.50	0.61	0.75	0.86	0.88	0.93	0.87	0.81	0.82	0.79	0.74	0.71	0.67
Rd 1,5-22% · 300 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.80	0.46	0.56	0.62	0.56	0.54	0.62	0.81	0.91	0.90	0.97	0.95	0.91	0.85	0.85	0.81	0.74	0.70	0.68
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · fleece	0.75	0.23	0.39	0.54	0.54	0.58	0.52	0.53	0.63	0.74	0.86	0.92	0.97	0.98	0.96	0.95	0.94	0.88	0.84
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · fleece	0.90	0.63	0.58	0.78	0.80	0.92	0.83	0.86	0.84	0.80	0.78	0.88	0.91	0.96	0.98	0.96	0.95	0.88	0.86
Rd 1,5-22% · 50 mm baffle height · 100 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.50	0.07	0.07	0.09	0.17	0.21	0.25	0.39	0.50	0.63	0.67	0.69	0.66	0.58	0.52	0.51	0.58	0.53	0.44
Rd 1,5-22% · 50 mm baffle height · 150 mm axis spacing · 40 mm mineral wool 45 kg/m³ · fleece	0.40	0.05	0.05	0.07	0.11	0.15	0.19	0.29	0.37	0.47	0.54	0.55	0.53	0.56	0.55	0.47	0.50	0.48	0.41
None (closed) · 40 mm baffle height · 50 mm axis spacing · without	0.85	0.17	0.20	0.54	0.91	0.95	1.04	1.04	0.96	0.89	0.88	0.85	0.70	0.62	0.61	0.77	0.87	0.80	0.66
None (closed) · 40 mm baffle height · 50 mm axis spacing · without	0.80	0.37	0.61	0.72	0.91	0.91	0.89	0.89	0.85	0.91	0.91	0.85	0.71	0.62	0.64	0.77	0.90	0.80	0.71
None (closed) · 40 mm baffle height · 50 mm axis spacing · without	0.90	0.29	0.44	0.75	0.88	1.06	1.02	1.02	0.98	0.97	0.97	0.89	0.74	0.71	0.75	0.85	0.79	0.58	0.49
None (closed) · 40 mm baffle height · 50 mm axis spacing · without	0.85	0.26	0.41	0.69	0.85	0.97	1.00	1.02	1.02	1.02	0.98	0.82	0.64	0.59	0.62	0.79	0.83	0.65	0.52
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · fleece	0.50	0.12	0.13	0.19	0.38	0.42	0.43	0.43	0.41	0.36	0.34	0.42	0.59	0.64	0.71	0.65	0.64	0.58	0.58
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 30 mm mineral wool 100 kg/m³ in PE film · fleece	0.50	0.16	0.20	0.39	0.41	0.46	0.41	0.34	0.38	0.50	0.58	0.62	0.62	0.63	0.62	0.61	0.57	0.58	0.53
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm Melaminharzschaum, 9 kg/m³ · fleece	0.60	0.17	0.27	0.50	0.49	0.55	0.47	0.43	0.49	0.59	0.64	0.68	0.66	0.68	0.66	0.64	0.61	0.63	0.60
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm Melaminharzschaum, 9 kg/m³ · without	0.55	0.19	0.33	0.44	0.42	0.50	0.42	0.40	0.47	0.53	0.58	0.60	0.60	0.63	0.61	0.59	0.57	0.59	0.56
Rd 1,5-22% · 200 mm baffle height · 150 mm axis spacing · 80x40 mm mineral wool 45 kg/m³ in PE film · without	0.50	0.18	0.12	0.23	0.25	0.30	0.28	0.29	0.36	0.49	0.60	0.74	0.79	0.68	0.65	0.61	0.59	0.56	0.51
Rd 1,5-22% · 200 mm baffle height · 150 mm axis spacing · 40x40 mm mineral wool 45 kg/m³ in PE film über der oberen RR · without	0.45	0.16	0.14	0.22	0.20	0.25	0.23	0.23	0.29	0.38	0.49	0.66	0.76	0.67	0.62	0.59	0.57	0.54	0.50
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · 80x40 mm mineral wool 45 kg/m³ in PE film · without	0.50	0.20	0.12	0.21	0.25	0.30	0.27	0.28	0.36	0.53	0.64	0.72	0.79	0.73	0.67	0.67	0.64	0.58	0.53
Rd 1,5-22% · 150 mm baffle height · 150 mm axis spacing · 40x40 mm mineral wool 45 kg/m³ in PE film at baffle with ALP andere Baffeln with 150x40 mm mineral wool 45 kg/m³ in PE film · without	0.55	0.17	0.16	0.26	0.28	0.33	0.29	0.32	0.42	0.62	0.70	0.76	0.79	0.76	0.71	0.67	0.65	0.62	0.58
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 150x40 mm mineral wool 45 kg/m³ in PE film · without	0.40	0.11	0.11	0.21	0.28	0.34	0.31	0.31	0.34	0.41	0.46	0.48	0.51	0.51	0.51	0.48	0.45	0.45	0.40
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 12-25 kg/m² in PE film SDE A2 · fleece	0.55	0.18	0.24	0.46	0.47	0.46	0.46	0.43	0.40	0.52	0.60	0.62	0.61	0.61	0.63	0.61	0.58	0.59	0.56
Rd 1,5-22% · 300 mm baffle height · 600 mm axis spacing · 40 mm mineral wool 12-25 kg/m² in PE film SDE A2 · without	0.55	0.19	0.30	0.54	0.52	0.56	0.51	0.44	0.44	0.53	0.61	0.63	0.63	0.63	0.62	0.58	0.55	0.53	0.49

Measured values as a table (74 measurements)

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Last updated: 09/16/2026