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 Ceiling Raft

Name: Fural Ceiling Raft
Brand: Fural Systeme in Metall GmbH

Ceiling Raft

EPD availableFree-hanging

Description

Free-hanging metal ceiling raft for flexible room acoustics, available as a single-piece or multi-piece version with a 55° or 90° folded edge. It can also be installed retrofit, without modifying the existing lighting. It can be combined with a cooling and heating function for later climate retrofitting. The structural ceiling remains visible and accessible for maintenance. Available formats: 2.88 m² (2.4x1.2 m), 3.45 m² (3x1.15 m), 1.35 m² (3x0.45 m), 2.70 m² (3x0.9 m), 4.05 m² (3x1.35 m), 2.88 m² (4.8x0.6 m), 3.60 m² (3x1.2 m), 1.96 m² (1.98 x 0.99 m).

Technical data

Material: galvanized steel

Surface: RAL 9010, powder coating 60–70 μm

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

Application: Ceiling raft (free-hanging)

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 46 variants

Perforation

Size

Surface

NRC

1.25

Frequency values

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.55	1.00	1.00	1.00	1.00	1.00

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Perforation	Size	Test setup	Surface	Value
Rv 1,6-20%	7.9 in overall build-up	2 in mineral wool 100 kg/m³ in PE film	—	NRC1.25
Rv 1,6-20%	7.9 in overall build-up	2 in mineral wool 150 kg/m³ in PE film	—	NRC1.35
Rg 2,5-16%	7.9 in overall build-up	2 in mineral wool 150 kg/m³ in PE film	—	NRC1.30
Rg 2,5-16%	7.9 in overall build-up	2 in mineral wool 100 kg/m³ in PE film	—	NRC1.25
Rg 2,5-16%	7.9 in overall build-up	6 Stk 3000 x 2 in mineral-wool strips 2 in wide 57 kg/m³ in PE film	Schmöle acoustic guide profile 8 pipe rows	NRC1.15
Rg 2,5-16%	16 in overall build-up	2 in mineral-wool strips 2 in wide 57 kg/m³ in PE film	Schmöle acoustic guide profile 12 pipe rows	NRC1.05
P30-System	7.9 in overall build-up	1.2 in mineral wool in PE 80 kg/m³	—	NRC1.15
P30-System	16 in overall build-up	1.2 in mineral wool in PE 80 kg/m³	—	NRC1.20
Rg 2,5-16%	4.1 in overall build-up	3.9 in mineral wool 50 kg/m³ in PE film	—	NRC1.25
Rv 1,6-20%	4.1 in overall build-up	3x polyester wool 20 kg/m³, 40 + 30 + 1.2 in	—	NRC1.00
Rd 1,5-22%	7.9 in overall build-up	1.2 in mineral wool 25 kg/m³ in PE film	cooling coil 2260x75, 8 pipe rows	NRC1.15
Rd 1,8-21%	7.9 in overall build-up	1.2 in mineral wool 45 kg/m³ in PE film	cooling coil 2260x75, 8 pipe rows	NRC1.10
Rd 1,5-22%	7.9 in overall build-up	1.2 in mineral wool 45 kg/m³ in PE film	cooling coil 2260x75, 8 pipe rows	NRC1.15
Rg 2,5-16%	7.9 in overall build-up	13 strips 50x50x118 in mineral wool 44 kg/m³ in PE film , 3.5 in Abstand, parallel to cooling coil, coverage ratio 57 %	cooling coil reproduced 2800x75, 8 pipe rows, 5.7 in grid	NRC1.10
Rg 2,5-16%	7.9 in overall build-up	7 Stk. polyester wool-strips with 2400x50x25, 80 kg/m³	Schmöle acoustic guide profile 8 pipe rows, 2800x3 in, 4.3 in grid	NRC0.90
Rd 1,5-22%	7.9 in overall build-up	1.2 in mineral wool 20 kg/m³ in PE film	cooling coil 2260x75, 8 pipe rows	NRC1.05
Rg 0,7-4%	7.9 in overall build-up	1.2 in mineral wool 45 kg/m³ in PE film	cooling coil 2260x75, 8 pipe rows	NRC1.05
Rg 2,5-16%	7.9 in overall build-up	—	Temperon-cooling coil, zwei 0.6 in Verteilerrohre, 14 1.1 in Registerrohre	NRC0.75
Rg 2,5-16%	7.9 in overall build-up	2 in mineral wool 100 kg/m³ in PE film	cooling coil mock-up 2800x75, 12 pipe rows, 3.5 in grid	NRC0.95
Rg 2,5-16%	7.9 in overall build-up	—	Schmöle acoustic guide profile 4 pipe rows	NRC0.85
Rg 2,5-16%	7.9 in overall build-up	—	Schmöle acoustic guide profile 6 pipe rows	NRC0.80
Rg 2,5-16%	16 in overall build-up	—	Schmöle acoustic guide profile 12 pipe rows	NRC0.75
Rg 2,5-16%	7.9 in overall build-up	—	—	NRC0.75
22,0 x 12,0 x 2,0 x 1,5	7.9 in overall build-up	0.8 in polyester wool 20 kg/m³	—	NRC0.85
22,0 x 12,0 x 2,0 x 1,5	7.9 in overall build-up	0.8 in polyester wool 20 kg/m³	—	NRC0.80
22,0 x 12,0 x 2,0 x 1,5	16 in overall build-up	0.8 in polyester wool 20 kg/m³	—	NRC0.85
Rg 2,5-16%	7.9 in overall build-up	0.8 in polyester wool 20 kg/m³	—	NRC0.85
Rg 2,5-16%	24 in overall build-up	0.8 in polyester wool 20 kg/m³	—	NRC0.90
Rg 2,5-16%	16 in overall build-up	0.8 in polyester wool 20 kg/m³	—	NRC0.85
Rv 1,6-20%	7.9 in overall build-up	—	Temperon-cooling coil, zwei 0.6 in Verteilerrohre, 14 1.1 in Registerrohre	NRC0.70
Rg 2,5-16%	7.9 in overall build-up	13 strips 50x50x118 in mineral wool 44 kg/m³ in PE film , 3.5 in Abstand, parallel to cooling coil, coverage ratio 57 %	cooling coil mock-up 2800x75, 12 pipe rows, 3.5 in grid	NRC0.90
Rg 2,5-16%	7.9 in overall build-up	34 strips 50x50x45 in mineral wool 44 kg/m³ in PE film , 3.5 in Abstand, perpendicular to cooling coil, coverage ratio 57 %	cooling coil mock-up 2800x75, 12 pipe rows, 3.5 in grid	NRC0.95
Rg 2,5-16%	7.9 in overall build-up	—	Schmöle acoustic guide profile 10 pipe rows	NRC0.80
Rg 2,5-16%	7.9 in overall build-up	—	Schmöle acoustic guide profile 12 pipe rows	NRC0.75
Rg 2,5-16%	7.9 in overall build-up	—	—	NRC0.65
Rg 2,5-16%	7.9 in overall build-up	—	Schmöle WLP 3 pipe rows, 1780x70, 7.9 in grid	NRC0.70
Rg 2,5-16%	7.9 in overall build-up	—	—	NRC0.70
Rg 2,5-16%	7.9 in overall build-up	—	Schmöle acoustic guide profile 12 pipe rows	NRC0.75
Rg 2,5-16%	31 in overall build-up	0.8 in polyester wool 20 kg/m³	—	NRC0.85
Rd 1,5-22%	7.9 in overall build-up	—	cooling coil 2260x75, 8 pipe rows	NRC0.70
Rg 2,5-16%	7.9 in overall build-up	—	cooling coil reproduced 2800x75, 12 pipe rows, 3.5 in grid	NRC0.65
Rg 2,5-16%	7.9 in overall build-up	—	Schmöle WLP 12 pipe rows	NRC0.65
Rg 0,7-4%	7.9 in overall build-up	—	cooling coil 2260x75, 8 pipe rows	NRC0.65
22,0 x 12,0 x 2,0 x 1,5	7.9 in overall build-up	—	—	NRC0.45
glatt	7.9 in overall build-up	2 in polyester wool 40 kg/m³	—	NRC0.65
Rg 2,5-16%	2 in overall build-up	—	—	NRC0.50

Test report: M 61840/21

NRC: 1.25 (derived from ISO 354 lab data)

Institute: MFPA Leipzig

Dimensions: 2.88 m² 2,4x1,2

Measured values as a table (46 measurements)

Fural Ceiling Raft: 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
Rv 1,6-20% · 200 mm overall build-up · Temperon-cooling coil, zwei 14 mm Verteilerrohre, 14 29 mm Registerrohre	0.70	0.14	0.21	0.28	0.45	0.59	0.63	0.76	0.87	0.87	0.73	0.59	0.69	0.76	0.69	0.76	0.73	0.69	0.73
Rg 2,5-16% · 200 mm overall build-up · Temperon-cooling coil, zwei 14 mm Verteilerrohre, 14 29 mm Registerrohre	0.75	0.17	0.24	0.31	0.52	0.69	0.69	0.83	0.90	0.94	0.83	0.69	0.76	0.80	0.76	0.80	0.73	0.73	0.73
Rg 2,5-16% · 200 mm overall build-up · cooling coil reproduced 2800x75, 12 pipe rows, 90 mm grid	0.65	0.14	0.23	0.55	0.49	0.64	0.67	0.72	0.72	0.72	0.67	0.67	0.67	0.61	0.61	0.52	0.46	0.41	0.35
Rg 2,5-16% · 200 mm overall build-up · 13 strips 50x50x3000 mm mineral wool 44 kg/m³ in PE film , 90 mm Abstand, parallel to cooling coil, coverage ratio 57 % · cooling coil reproduced 2800x75, 8 pipe rows, 145 mm grid	1.10	0.29	0.43	0.84	0.87	1.19	1.16	1.19	1.28	1.13	1.10	1.07	1.01	1.01	0.93	0.87	0.81	0.75	0.72
Rv 1,6-20% · 200 mm overall build-up · 50 mm mineral wool 100 kg/m³ in PE film	1.25	0.38	0.52	0.69	0.97	1.08	1.22	1.25	1.32	1.39	1.32	1.32	1.35	1.39	1.28	1.22	1.18	1.08	1.01
Rv 1,6-20% · 200 mm overall build-up · 50 mm mineral wool 150 kg/m³ in PE film	1.35	0.35	0.56	0.83	1.01	1.22	1.25	1.32	1.35	1.32	1.35	1.39	1.39	1.39	1.35	1.28	1.22	1.18	1.04
Rg 2,5-16% · 200 mm overall build-up · 50 mm mineral wool 150 kg/m³ in PE film	1.30	0.38	0.56	0.83	1.01	1.22	1.28	1.32	1.35	1.35	1.35	1.39	1.39	1.35	1.32	1.25	1.18	1.11	1.01
Rg 2,5-16% · 200 mm overall build-up · 50 mm mineral wool 100 kg/m³ in PE film	1.25	0.38	0.56	0.69	0.97	1.08	1.22	1.25	1.37	1.39	1.32	1.32	1.35	1.39	1.25	1.22	1.15	0.97	0.90
Rg 2,5-16% · 200 mm overall build-up · 13 strips 50x50x3000 mm mineral wool 44 kg/m³ in PE film , 90 mm Abstand, parallel to cooling coil, coverage ratio 57 % · cooling coil mock-up 2800x75, 12 pipe rows, 90 mm grid	0.90	0.23	0.52	0.84	0.84	1.04	1.01	0.99	1.04	0.99	0.93	0.87	0.81	0.81	0.72	0.67	0.61	0.55	0.52
Rg 2,5-16% · 200 mm overall build-up · 34 strips 50x50x1150 mm mineral wool 44 kg/m³ in PE film , 90 mm Abstand, perpendicular to cooling coil, coverage ratio 57 % · cooling coil mock-up 2800x75, 12 pipe rows, 90 mm grid	0.95	0.29	0.52	0.84	0.78	1.07	0.96	0.99	1.04	1.01	0.96	0.90	0.84	0.84	0.75	0.67	0.61	0.55	0.49
Rg 2,5-16% · 200 mm overall build-up · 50 mm mineral wool 100 kg/m³ in PE film · cooling coil mock-up 2800x75, 12 pipe rows, 90 mm grid	0.95	0.38	0.67	0.90	0.96	1.13	1.01	1.04	1.07	1.01	0.96	0.90	0.87	0.87	0.78	0.70	0.64	0.58	0.52
Rg 2,5-16% · 200 mm overall build-up · Schmöle acoustic guide profile 4 pipe rows	0.85	0.15	0.22	0.30	0.67	0.74	1.04	0.96	1.04	1.04	0.89	0.81	0.96	0.89	0.81	0.74	0.67	0.59	0.52
Rg 2,5-16% · 200 mm overall build-up · 6 Stk 3000 x 50 mm mineral-wool strips 50 mm wide 57 kg/m³ in PE film · Schmöle acoustic guide profile 8 pipe rows	1.15	0.19	0.33	0.44	0.67	0.89	1.11	1.26	1.37	1.22	1.11	1.19	1.22	1.11	1.07	1.00	0.93	0.85	0.81
Rg 2,5-16% · 200 mm overall build-up · Schmöle acoustic guide profile 6 pipe rows	0.80	0.07	0.22	0.26	0.52	0.63	0.81	0.89	1.00	0.93	0.78	0.74	0.85	0.81	0.78	0.78	0.70	0.63	0.56
Rg 2,5-16% · 200 mm overall build-up · Schmöle acoustic guide profile 10 pipe rows	0.80	0.15	0.26	0.26	0.52	0.67	0.85	0.93	1.00	0.89	0.78	0.74	0.85	0.78	0.74	0.74	0.63	0.59	0.52
Rg 2,5-16% · 200 mm overall build-up · Schmöle acoustic guide profile 12 pipe rows	0.75	0.17	0.20	0.30	0.52	0.64	0.77	0.84	0.91	0.89	0.79	0.72	0.81	0.77	0.72	0.69	0.64	0.57	0.49
Rg 2,5-16% · 400 mm overall build-up · Schmöle acoustic guide profile 12 pipe rows	0.75	0.22	0.30	0.54	0.69	0.79	0.86	0.77	0.69	0.79	0.86	0.81	0.84	0.84	0.79	0.79	0.72	0.64	0.62
Rg 2,5-16% · 400 mm overall build-up · 50 mm mineral-wool strips 50 mm wide 57 kg/m³ in PE film · Schmöle acoustic guide profile 12 pipe rows	1.05	0.25	0.42	0.62	0.81	0.91	0.99	0.89	0.96	1.14	1.19	1.21	1.23	1.19	1.11	1.09	1.04	0.96	0.86
Rg 2,5-16% · 200 mm overall build-up · Schmöle acoustic guide profile 12 pipe rows	0.75	0.12	0.20	0.29	0.46	0.61	0.78	0.87	0.90	0.87	0.81	0.72	0.78	0.75	0.70	0.70	0.61	0.58	0.55
Rg 2,5-16% · 200 mm overall build-up · Schmöle WLP 12 pipe rows	0.65	0.09	0.23	0.32	0.43	0.58	0.72	0.78	0.75	0.75	0.70	0.67	0.70	0.64	0.61	0.55	0.49	0.43	0.38
Rg 2,5-16% · 50 mm overall build-up	0.50	0.07	0.10	0.07	0.10	0.10	0.17	0.21	0.31	0.42	0.59	0.69	0.80	0.87	0.90	0.90	0.80	0.63	0.56
Rg 2,5-16% · 200 mm overall build-up	0.65	0.10	0.24	0.21	0.42	0.49	0.66	0.73	0.83	0.83	0.76	0.63	0.69	0.76	0.73	0.76	0.73	0.69	0.66
Rg 2,5-16% · 200 mm overall build-up	0.75	0.07	0.17	0.35	0.49	0.59	0.66	0.83	0.90	0.90	0.76	0.66	0.76	0.83	0.80	0.80	0.76	0.73	0.69
P30-System · 200 mm overall build-up · 30 mm mineral wool in PE 80 kg/m³	1.15	0.14	0.25	0.50	0.78	0.78	0.92	1.22	1.42	1.50	1.44	1.33	1.17	1.08	1.06	1.17	1.19	0.94	0.83
P30-System · 400 mm overall build-up · 30 mm mineral wool in PE 80 kg/m³	1.20	0.14	0.28	0.69	0.83	0.78	0.89	1.14	1.25	1.50	1.61	1.47	1.28	1.19	1.25	1.33	1.39	1.11	0.94
Rg 2,5-16% · 200 mm overall build-up · Schmöle WLP 3 pipe rows, 1780x70, 200 mm grid	0.70	0.11	0.19	0.30	0.48	0.56	0.74	0.78	0.85	0.89	0.78	0.67	0.74	0.78	0.74	0.70	0.70	0.67	0.63
Rg 2,5-16% · 200 mm overall build-up · 7 Stk. polyester wool-strips with 2400x50x25, 80 kg/m³ · Schmöle acoustic guide profile 8 pipe rows, 2800x75 mm, 110 mm grid	0.90	0.11	0.26	0.44	0.63	0.70	0.93	1.04	1.11	1.11	1.00	0.89	1.00	0.96	0.96	0.93	0.89	0.85	0.81
Rg 2,5-16% · 105 mm overall build-up · 100 mm mineral wool 50 kg/m³ in PE film	1.25	0.46	0.61	0.97	1.12	1.38	1.33	1.43	1.38	1.33	1.28	1.22	1.17	1.12	1.07	1.07	1.07	1.02	1.02
Rv 1,6-20% · 105 mm overall build-up · 3x polyester wool 20 kg/m³, 40 + 30 + 30 mm	1.00	0.51	0.56	0.71	0.92	0.97	1.02	1.02	1.02	1.02	1.07	1.07	1.07	1.02	0.92	0.92	0.92	0.82	0.77
Rg 2,5-16% · 200 mm overall build-up	0.70	0.07	0.17	0.27	0.42	0.54	0.67	0.79	0.86	0.89	0.77	0.64	0.74	0.81	0.77	0.81	0.79	0.77	0.72
Rd 1,5-22% · 200 mm overall build-up · 30 mm mineral wool 20 kg/m³ in PE film · cooling coil 2260x75, 8 pipe rows	1.05	0.07	0.19	0.37	0.56	0.74	1.00	1.15	1.19	1.22	1.22	1.22	1.19	1.07	1.00	0.89	0.85	0.78	0.74
Rd 1,5-22% · 200 mm overall build-up · 30 mm mineral wool 25 kg/m³ in PE film · cooling coil 2260x75, 8 pipe rows	1.15	0.22	0.41	0.70	0.81	0.96	1.11	1.26	1.30	1.33	1.26	1.26	1.22	1.15	1.04	0.93	0.89	0.85	0.85
Rd 1,5-22% · 200 mm overall build-up · cooling coil 2260x75, 8 pipe rows	0.70	0.07	0.22	0.33	0.48	0.59	0.70	0.81	0.89	0.85	0.74	0.63	0.70	0.70	0.63	0.63	0.56	0.48	0.48
Rd 1,8-21% · 200 mm overall build-up · 30 mm mineral wool 45 kg/m³ in PE film · cooling coil 2260x75, 8 pipe rows	1.10	0.15	0.37	0.70	0.81	0.89	1.07	1.26	1.26	1.30	1.33	1.30	1.26	1.19	1.04	0.93	0.89	0.85	0.81
Rd 1,5-22% · 200 mm overall build-up · 30 mm mineral wool 45 kg/m³ in PE film · cooling coil 2260x75, 8 pipe rows	1.15	0.22	0.37	0.67	0.78	0.93	1.11	1.26	1.30	1.33	1.33	1.33	1.26	1.19	1.07	0.96	0.93	0.89	0.78
22,0 x 12,0 x 2,0 x 1,5 · 200 mm overall build-up · 20 mm polyester wool 20 kg/m³	0.85	0.07	0.19	0.19	0.33	0.44	0.70	0.78	0.96	1.04	0.96	0.93	0.96	1.11	1.07	1.07	1.07	1.11	1.07
22,0 x 12,0 x 2,0 x 1,5 · 200 mm overall build-up · 20 mm polyester wool 20 kg/m³	0.80	0.10	0.15	0.22	0.35	0.44	0.64	0.77	0.89	0.96	0.91	0.86	0.94	1.06	0.99	1.04	1.04	1.06	1.04
22,0 x 12,0 x 2,0 x 1,5 · 400 mm overall build-up · 20 mm polyester wool 20 kg/m³	0.85	0.11	0.26	0.37	0.56	0.63	0.78	0.67	0.63	0.78	0.96	1.00	1.11	1.15	1.19	1.19	1.19	1.22	1.22
Rg 0,7-4% · 200 mm overall build-up · 30 mm mineral wool 45 kg/m³ in PE film · cooling coil 2260x75, 8 pipe rows	1.05	0.22	0.44	0.85	0.81	0.93	1.04	1.22	1.22	1.19	1.19	1.19	1.07	1.04	0.89	0.81	0.74	0.74	0.67
Rg 0,7-4% · 200 mm overall build-up · cooling coil 2260x75, 8 pipe rows	0.65	0.11	0.26	0.41	0.56	0.59	0.74	0.78	0.81	0.78	0.67	0.63	0.67	0.67	0.59	0.56	0.48	0.41	0.41
glatt · 200 mm overall build-up · 50 mm polyester wool 40 kg/m³	0.65	0.22	0.44	0.70	0.74	0.81	0.89	0.81	0.78	0.70	0.63	0.52	0.56	0.52	0.44	0.41	0.37	0.37	0.37
Rg 2,5-16% · 200 mm overall build-up · 20 mm polyester wool 20 kg/m³	0.85	0.11	0.15	0.22	0.33	0.44	0.70	0.78	0.93	1.00	0.93	0.89	1.04	1.11	1.11	1.11	1.07	1.07	1.07
Rg 2,5-16% · 600 mm overall build-up · 20 mm polyester wool 20 kg/m³	0.90	0.15	0.33	0.44	0.56	0.52	0.52	0.59	0.78	0.81	0.96	1.04	1.19	1.26	1.26	1.26	1.26	1.37	1.30
Rg 2,5-16% · 800 mm overall build-up · 20 mm polyester wool 20 kg/m³	0.85	0.15	0.33	0.44	0.44	0.41	0.56	0.56	0.70	0.85	0.96	1.04	1.15	1.26	1.22	1.26	1.26	1.33	1.30
Rg 2,5-16% · 400 mm overall build-up · 20 mm polyester wool 20 kg/m³	0.85	0.15	0.30	0.41	0.56	0.63	0.74	0.63	0.63	0.81	0.96	1.00	1.11	1.19	1.15	1.22	1.22	1.30	1.19
22,0 x 12,0 x 2,0 x 1,5 · 200 mm overall build-up	0.45	0.07	0.11	0.19	0.26	0.33	0.52	0.56	0.67	0.67	0.56	0.41	0.56	0.56	0.48	0.56	0.59	0.59	0.52

Measured values as a table (46 measurements)

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Last updated: 09/16/2026