Fural Ceiling Raft

Ceiling Raft

αw 0.35–1.00Absorber classes A–D

EPD availableCeilingFree-hanging
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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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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

ISO 354 – reverberation chamber· 46 variants

Perforation

Size

Gap / cavity

Surface

αw
1.00

Frequency values

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ComparePerforationSizeGap / cavityTest setupValue
Rv 1.6-20%2400 × 1200 mm200 mm suspension height50 mm mineral wool 100 kg/m³ in PE filmαw1.00
Rv 1.6-20%2400 × 1200 mm200 mm suspension height50 mm mineral wool 150 kg/m³ in PE filmαw1.00
Rg 2.5-16%2400 × 1200 mm200 mm suspension height50 mm mineral wool 150 kg/m³ in PE filmαw1.00
Rg 2.5-16%2400 × 1200 mm200 mm suspension height50 mm mineral wool 100 kg/m³ in PE filmαw1.00
Rg 2.5-16%3000 × 900 mm200 mm suspension height6 pcs 3000 x 50 mm mineral-wool strips 50 mm wide 57 kg/m³ in PE film; Schmöle acoustic guide profile 8 pipe rows, coverage ratio 62 %αw1.00
Rg 2.5-16%3000 × 1350 mm400 mm suspension height50 mm mineral-wool strips 50 mm wide 57 kg/m³ in PE film; Schmöle acoustic guide profile 12 pipe rows, coverage ratio 62 %αw1.00
P30-System3000 × 1200 mm200 mm suspension height30 mm mineral wool in PE 80 kg/m³αw1.00
P30-System3000 × 1200 mm400 mm suspension height30 mm mineral wool in PE 80 kg/m³αw1.00

Absorber class: A

Test report: M 61840/21

Institute: Müller-BBM

Dimensions: 2.88 m²

Test setup: 50 mm mineral wool 100 kg/m³ in PE film

Terms of use
Measured values as a table (46 measurements)
Fural Ceiling Raft: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upαwAbsorber class100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1000 Hz1250 Hz1600 Hz2000 Hz2500 Hz3150 Hz4000 Hz5000 Hz
Rv 1.6-20% · 2400 × 1200 mm · 200 mm suspension height · without absorber layer; Temperon cooling coil, two 14 mm distribution pipes, 14 29 mm register pipes, coverage ratio 30 % · with acoustic fleece0.75C0.140.210.280.450.590.630.760.870.870.730.590.690.760.690.760.730.690.73
Rg 2.5-16% · 2400 × 1200 mm · 200 mm suspension height · without absorber layer; Temperon cooling coil, two 14 mm distribution pipes, 14 29 mm register pipes, coverage ratio 30 % · with acoustic fleece0.80B0.170.240.310.520.690.690.830.900.940.830.690.760.800.760.800.730.730.73
Rg 2.5-16% · 3000 × 1150 mm · 200 mm suspension height · without absorber layer; cooling coil reproduced 2800x75, 12 pipe rows, 90 mm grid, coverage ratio 73 % · with acoustic fleece0.60C0.140.230.550.490.640.670.720.720.720.670.670.670.610.610.520.460.410.35
Rg 2.5-16% · 3000 × 1150 mm · 200 mm suspension height · 13 strips 50x50x3000 mm mineral wool 44 kg/m³ in PE film, 90 mm spacing, parallel to cooling coil, coverage ratio 57 %; cooling coil reproduced 2800x75, 8 pipe rows, 145 mm grid, coverage ratio 49 % · with acoustic fleece0.95A0.290.430.840.871.191.161.191.281.131.101.071.011.010.930.870.810.750.72
Rv 1.6-20% · 2400 × 1200 mm · 200 mm suspension height · 50 mm mineral wool 100 kg/m³ in PE film · with acoustic fleece1.00A0.380.520.690.971.081.221.251.321.391.321.321.351.391.281.221.181.081.01
Rv 1.6-20% · 2400 × 1200 mm · 200 mm suspension height · 50 mm mineral wool 150 kg/m³ in PE film · with acoustic fleece1.00A0.350.560.831.011.221.251.321.351.321.351.391.391.391.351.281.221.181.04
Rg 2.5-16% · 2400 × 1200 mm · 200 mm suspension height · 50 mm mineral wool 150 kg/m³ in PE film · with acoustic fleece1.00A0.380.560.831.011.221.281.321.351.351.351.391.391.351.321.251.181.111.01
Rg 2.5-16% · 2400 × 1200 mm · 200 mm suspension height · 50 mm mineral wool 100 kg/m³ in PE film · with acoustic fleece1.00A0.380.560.690.971.081.221.251.371.391.321.321.351.391.251.221.150.970.90
Rg 2.5-16% · 3000 × 1150 mm · 200 mm suspension height · 13 strips 50x50x3000 mm mineral wool 44 kg/m³ in PE film, 90 mm spacing, parallel to cooling coil, coverage ratio 57 %; cooling coil mock-up 2800x75, 12 pipe rows, 90 mm grid, coverage ratio 73 % · with acoustic fleece0.75C0.230.520.840.841.041.010.991.040.990.930.870.810.810.720.670.610.550.52
Rg 2.5-16% · 3000 × 1150 mm · 200 mm suspension height · 34 strips 50x50x1150 mm mineral wool 44 kg/m³ in PE film, 90 mm spacing, perpendicular to cooling coil, coverage ratio 57 %; cooling coil mock-up 2800x75, 12 pipe rows, 90 mm grid, coverage ratio 73 % · with acoustic fleece0.75C0.290.520.840.781.070.960.991.041.010.960.900.840.840.750.670.610.550.49
Rg 2.5-16% · 3000 × 1150 mm · 200 mm suspension height · 50 mm mineral wool 100 kg/m³ in PE film; cooling coil mock-up 2800x75, 12 pipe rows, 90 mm grid, coverage ratio 73 % · with acoustic fleece0.80B0.380.670.900.961.131.011.041.071.010.960.900.870.870.780.700.640.580.52
Rg 2.5-16% · 3000 × 450 mm · 200 mm suspension height · without absorber layer; Schmöle acoustic guide profile 4 pipe rows, coverage ratio 62 % · with acoustic fleece0.80B0.150.220.300.670.741.040.961.041.040.890.810.960.890.810.740.670.590.52
Rg 2.5-16% · 3000 × 900 mm · 200 mm suspension height · 6 pcs 3000 x 50 mm mineral-wool strips 50 mm wide 57 kg/m³ in PE film; Schmöle acoustic guide profile 8 pipe rows, coverage ratio 62 % · with acoustic fleece1.00A0.190.330.440.670.891.111.261.371.221.111.191.221.111.071.000.930.850.81
Rg 2.5-16% · 3000 × 900 mm · 200 mm suspension height · without absorber layer; Schmöle acoustic guide profile 6 pipe rows, coverage ratio 46 % · with acoustic fleece0.80B0.070.220.260.520.630.810.891.000.930.780.740.850.810.780.780.700.630.56
Rg 2.5-16% · 3000 × 900 mm · 200 mm suspension height · without absorber layer; Schmöle acoustic guide profile 10 pipe rows, coverage ratio 77 % · with acoustic fleece0.75C0.150.260.260.520.670.850.931.000.890.780.740.850.780.740.740.630.590.52
Rg 2.5-16% · 3000 × 1350 mm · 200 mm suspension height · without absorber layer; Schmöle acoustic guide profile 12 pipe rows, coverage ratio 62 % · with acoustic fleece0.70C0.170.200.300.520.640.770.840.910.890.790.720.810.770.720.690.640.570.49
Rg 2.5-16% · 3000 × 1350 mm · 400 mm suspension height · without absorber layer; Schmöle acoustic guide profile 12 pipe rows, coverage ratio 62 % · with acoustic fleece0.80B0.220.300.540.690.790.860.770.690.790.860.810.840.840.790.790.720.640.62
Rg 2.5-16% · 3000 × 1350 mm · 400 mm suspension height · 50 mm mineral-wool strips 50 mm wide 57 kg/m³ in PE film; Schmöle acoustic guide profile 12 pipe rows, coverage ratio 62 % · with acoustic fleece1.00A0.250.420.620.810.910.990.890.961.141.191.211.231.191.111.091.040.960.86
Rg 2.5-16% · 3000 × 1150 mm · 200 mm suspension height · without absorber layer; Schmöle acoustic guide profile 12 pipe rows, coverage ratio 72 % · with acoustic fleece0.75C0.120.200.290.460.610.780.870.900.870.810.720.780.750.700.700.610.580.55
Rg 2.5-16% · 3000 × 1150 mm · 200 mm suspension height · without absorber layer; Schmöle WLP 12 pipe rows, coverage ratio 72 % · with acoustic fleece0.60C0.090.230.320.430.580.720.780.750.750.700.670.700.640.610.550.490.430.38
Rg 2.5-16% · 2400 × 1200 mm · 50 mm suspension height · without absorber layer · with acoustic fleece0.35D0.070.100.070.100.100.170.210.310.420.590.690.800.870.900.900.800.630.56
Rg 2.5-16% · 2400 × 1200 mm · 200 mm suspension height · without absorber layer · with acoustic fleece0.75C0.100.240.210.420.490.660.730.830.830.760.630.690.760.730.760.730.690.66
Rg 2.5-16% · 4800 × 600 mm · 200 mm suspension height · without absorber layer · with acoustic fleece0.80B0.070.170.350.490.590.660.830.900.900.760.660.760.830.800.800.760.730.69
P30-System · 3000 × 1200 mm · 200 mm suspension height · 30 mm mineral wool in PE 80 kg/m³ · without fleece1.00A0.140.250.500.780.780.921.221.421.501.441.331.171.081.061.171.190.940.83
P30-System · 3000 × 1200 mm · 400 mm suspension height · 30 mm mineral wool in PE 80 kg/m³ · without fleece1.00A0.140.280.690.830.780.891.141.251.501.611.471.281.191.251.331.391.110.94
Rg 2.5-16% · 3000 × 900 mm · 200 mm suspension height · without absorber layer; Schmöle WLP 3 pipe rows, 1780x70, 200 mm grid, coverage ratio 14 % · with acoustic fleece0.75C0.110.190.300.480.560.740.780.850.890.780.670.740.780.740.700.700.670.63
Rg 2.5-16% · 3000 × 900 mm · 200 mm suspension height · 7 pcs. polyester wool strips with 2400x50x25, 80 kg/m³; Schmöle acoustic guide profile 8 pipe rows, 2800x75 mm, 110 mm grid, coverage ratio 62 % · with acoustic fleece0.95A0.110.260.440.630.700.931.041.111.111.000.891.000.960.960.930.890.850.81
Rg 2.5-16% · 1980 × 990 mm · 105 mm suspension height · 100 mm mineral wool 50 kg/m³ in PE film · with acoustic fleece1.00A0.460.610.971.121.381.331.431.381.331.281.221.171.121.071.071.071.021.02
Rv 1.6-20% · 1980 × 990 mm · 105 mm suspension height · 3x polyester wool 20 kg/m³, 40 + 30 + 30 mm · with acoustic fleece1.00A0.510.560.710.920.971.021.021.021.021.071.071.071.020.920.920.920.820.77
Rg 2.5-16% · 3000 × 1350 mm · 200 mm suspension height · without absorber layer · with acoustic fleece0.75C0.070.170.270.420.540.670.790.860.890.770.640.740.810.770.810.790.770.72
Rd 1.5-22% · 3000 × 900 mm · 200 mm suspension height · 30 mm mineral wool 20 kg/m³ in PE film; cooling coil 2260x75, 8 pipe rows, coverage ratio 50 % · without fleece0.95A0.070.190.370.560.741.001.151.191.221.221.221.191.071.000.890.850.780.74
Rd 1.5-22% · 3000 × 900 mm · 200 mm suspension height · 30 mm mineral wool 25 kg/m³ in PE film; cooling coil 2260x75, 8 pipe rows, coverage ratio 50 % · with acoustic fleece1.00A0.220.410.700.810.961.111.261.301.331.261.261.221.151.040.930.890.850.85
Rd 1.5-22% · 3000 × 900 mm · 200 mm suspension height · without absorber layer; cooling coil 2260x75, 8 pipe rows, coverage ratio 50 % · with acoustic fleece0.65C0.070.220.330.480.590.700.810.890.850.740.630.700.700.630.630.560.480.48
Rd 1.8-21% · 3000 × 900 mm · 200 mm suspension height · 30 mm mineral wool 45 kg/m³ in PE film; cooling coil 2260x75, 8 pipe rows, coverage ratio 50 % · with acoustic fleece1.00A0.150.370.700.810.891.071.261.261.301.331.301.261.191.040.930.890.850.81
Rd 1.5-22% · 3000 × 900 mm · 200 mm suspension height · 30 mm mineral wool 45 kg/m³ in PE film; cooling coil 2260x75, 8 pipe rows, coverage ratio 50 % · with acoustic fleece1.00A0.220.370.670.780.931.111.261.301.331.331.331.261.191.070.960.930.890.78
22.0 x 12.0 x 2.0 x 1.5 · 3000 × 900 mm · 200 mm suspension height · 20 mm polyester wool 20 kg/m³ · without fleece0.80B0.070.190.190.330.440.700.780.961.040.960.930.961.111.071.071.071.111.07
22.0 x 12.0 x 2.0 x 1.5 · 3000 × 1350 mm · 200 mm suspension height · 20 mm polyester wool 20 kg/m³ · without fleece0.80B0.100.150.220.350.440.640.770.890.960.910.860.941.060.991.041.041.061.04
22.0 x 12.0 x 2.0 x 1.5 · 3000 × 900 mm · 400 mm suspension height · 20 mm polyester wool 20 kg/m³ · without fleece0.80B0.110.260.370.560.630.780.670.630.780.961.001.111.151.191.191.191.221.22
Rg 0.7-4% · 3000 × 900 mm · 200 mm suspension height · 30 mm mineral wool 45 kg/m³ in PE film; cooling coil 2260x75, 8 pipe rows, coverage ratio 50 % · with acoustic fleece0.90A0.220.440.850.810.931.041.221.221.191.191.191.071.040.890.810.740.740.67
Rg 0.7-4% · 3000 × 900 mm · 200 mm suspension height · without absorber layer; cooling coil 2260x75, 8 pipe rows, coverage ratio 50 % · with acoustic fleece0.60C0.110.260.410.560.590.740.780.810.780.670.630.670.670.590.560.480.410.41
Smooth · 3000 × 900 mm · 200 mm suspension height · 50 mm polyester wool 40 kg/m³ · without fleece0.50D0.220.440.700.740.810.890.810.780.700.630.520.560.520.440.410.370.370.37
Rg 2.5-16% · 3000 × 900 mm · 200 mm suspension height · 20 mm polyester wool 20 kg/m³ · without fleece0.80B0.110.150.220.330.440.700.780.931.000.930.891.041.111.111.111.071.071.07
Rg 2.5-16% · 3000 × 900 mm · 600 mm suspension height · 20 mm polyester wool 20 kg/m³ · without fleece0.80B0.150.330.440.560.520.520.590.780.810.961.041.191.261.261.261.261.371.30
Rg 2.5-16% · 3000 × 900 mm · 800 mm suspension height · 20 mm polyester wool 20 kg/m³ · without fleece0.70C0.150.330.440.440.410.560.560.700.850.961.041.151.261.221.261.261.331.30
Rg 2.5-16% · 3000 × 900 mm · 400 mm suspension height · 20 mm polyester wool 20 kg/m³ · without fleece0.80B0.150.300.410.560.630.740.630.630.810.961.001.111.191.151.221.221.301.19
22.0 x 12.0 x 2.0 x 1.5 · 3000 × 900 mm · 200 mm suspension height · without absorber layer · with acoustic fleece0.55D0.070.110.190.260.330.520.560.670.670.560.410.560.560.480.560.590.590.52
Measured values as a table (46 measurements)

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