Fural Acoustic Baffle
Acoustic Baffle
αw 0.30–0.90Absorber classes A–D
EPD availableFree-hanging
With a free account
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.
Documents
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
ISO 354 – reverberation chamber· 74 variants
Perforation
Size
Spacing
Gap / cavity
Surface
αw
0.90
Frequency values
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| Compare | Perforation | Size | Spacing | Gap / | Test setup | Value |
|---|---|---|---|---|---|---|
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 240 mm suspension height | two-part; absorber layer 30 mm mineral wool 45 kg/m³ in PE, with 10 mm wooden battens underneath | αw0.90 | |
| Rd 1.5-22% | 600 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.85 | |
| Rd 1.5-22% | 600 mm baffle height, 40 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.85 | |
| Rd 1.5-22% | 300 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³; cooling coil 2580x75, 3 pipe rows, 110 mm grid, on both sides, every baffle, coverage ratio 69 % | αw0.80 | |
| None (closed) | 40 mm baffle height, 30 mm thickness | 50 mm axis spacing | 400 mm suspension height | P30-System; absorber layer 40 mm PE-polyester wool 20 kg/m³ | αw0.80 | |
| Rd 1.5-22% | 220 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³; slotted cooling coil 2500x75 and 2560x75, 2 pipe rows, 110 mm grid, on both sides, every baffle, coverage ratio 43 % | αw0.75 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 40 mm suspension height | two-part; absorber layer 30 mm mineral wool 45 kg/m³ in PE, with 10 mm wooden battens underneath | αw0.75 | |
| None (closed) | 40 mm baffle height, 30 mm thickness | 50 mm axis spacing | 200 mm suspension height | P30-System; absorber layer 40 mm PE-polyester wool 20 kg/m³ | αw0.75 | |
| None (closed) | 40 mm baffle height, 30 mm thickness | 50 mm axis spacing | 200 mm suspension height | P30-System; absorber layer 40 mm mineral wool 55 kg/m³ in PE film | αw0.75 | |
| None (closed) | 40 mm baffle height, 30 mm thickness | 50 mm axis spacing | 200 mm suspension height | P30-System; absorber layer 30 mm mineral wool 80 kg/m³ in PE film | αw0.75 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.70 | |
| Rd 1.5-22% | 600 mm baffle height, 40 mm thickness | 300 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.70 | |
| Rd 1.5-22% | 600 mm baffle height, 40 mm thickness | 300 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.70 | |
| Rd 1.5-22% | 150 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³; cooling coil 2580x110, 1 pipe row, on both sides, every baffle, coverage ratio 67 % | αw0.70 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.65 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.65 | |
| Rd 1.5-22% | 220 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on both sides, every baffle, coverage ratio 60 % | αw0.65 | |
| Rd 1.5-22% | 220 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on one side, every baffle, coverage ratio 30 % | αw0.65 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 300 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.60 | |
| Rd 1.5-22% | 600 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.60 | |
| Rd 1.5-22% | 600 mm baffle height, 40 mm thickness | 600 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.60 | |
| Rd 0.9-14% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.60 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.60 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.60 | |
| Rg 0.9-7% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.60 | |
| Rg 1.5-11% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.60 | |
| Rd 1.5-11% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.60 | |
| Rd 1.5-22% | 220 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on both sides, every 2nd baffle, coverage ratio 30 % | αw0.60 | |
| Rd 1.5-22% | 220 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 50 mm mineral wool 45 kg/m³ | αw0.60 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm melamine resin foam, 9 kg/m³ | αw0.60 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 300 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.55 | |
| Rg 2.5-16% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 50 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 50 mm mineral wool 50 kg/m³ | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³; cooling coil 1795x70, 2 pipe rows, every baffle, coverage ratio 47 % | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³; cooling coil 1795x60, 2 pipe rows, every baffle, coverage ratio 40 % | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ in PE film | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | one-part; 40 mm melamine resin foam, 9 kg/m³ | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 12-25 kg/m² in PE film SDE A2 | αw0.55 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | one-part; 40 mm mineral wool 12-25 kg/m² in PE film SDE A2 | αw0.55 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 150 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.50 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 300 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.50 | |
| Rg 0.7-4% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.50 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm sheep wool 28 kg/m³ | αw0.50 | |
| Rd 1.5-22% | 300 mm baffle height, 32 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.50 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³; cooling coil 1795x80, 2 pipe rows, every baffle, coverage ratio 53 % | αw0.50 | |
| Rd 1.5-22% | 220 mm baffle height, 50 mm thickness | 300 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on both sides, every 2nd baffle, coverage ratio 30 % | αw0.50 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 800 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.50 | |
| Rd 1.5-22% | 50 mm baffle height, 40 mm thickness | 100 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³ | αw0.50 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 30 mm mineral wool 100 kg/m³ in PE film | αw0.50 | |
| Rd 1.5-22% | 200 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | one-part; 80x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 29 % | αw0.50 | |
| Rd 1.5-22% | 150 mm baffle height, 50 mm thickness | 150 mm axis spacing | 225 mm suspension height | one-part; 40x40 mm mineral wool 45 kg/m³ in PE film in baffles with ALP; other baffles with 150x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every 2nd baffle, ALP at the bottom of the baffle; other baffles with mineral wool only; baffles with ALP and mineral wool alternating, coverage ratio 39 % | αw0.50 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.45 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.45 | |
| Rd 1.5-22% | 300 mm baffle height, 50 mm thickness | 600 mm axis spacing | 200 mm suspension height | two-part; 50 mm mineral wool 45 kg/m³ | αw0.45 | |
| Rd 1.5-22% | 300 mm baffle height, 50 mm thickness | 600 mm axis spacing | 200 mm suspension height | two-part; 50 mm mineral wool 50 kg/m³ | αw0.45 | |
| Rd 1.5-22% | 300 mm baffle height, 50 mm thickness | 600 mm axis spacing | 400 mm suspension height | two-part; 50 mm mineral wool 50 kg/m³ | αw0.45 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 400 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.45 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 600 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.45 | |
| Rd 1.5-22% | 150 mm baffle height, 50 mm thickness | 150 mm axis spacing | 50 mm suspension height | two-part; without filling; cooling coil acoustic guide profile 1610x75, 1 pipe row, on one side, every baffle, coverage ratio 22 % | αw0.45 | |
| Rd 1.5-22% | 150 mm baffle height, 50 mm thickness | 150 mm axis spacing | 225 mm suspension height | one-part; 80x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 39 % | αw0.45 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | one-part; 150x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 19 % | αw0.45 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 300 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.40 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.40 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side | αw0.40 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | one-part; 40 mm PE-polyester wool 20 kg/m³ | αw0.40 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | one-part; 2x20 mm PE-polyester wool 20 kg/m³ | αw0.40 | |
| Rd 1.5-22% | 220 mm baffle height, 50 mm thickness | 600 mm axis spacing | 200 mm suspension height | two-part; 50 mm mineral wool 45 kg/m³ | αw0.40 | |
| Rd 1.5-22% | 50 mm baffle height, 40 mm thickness | 150 mm axis spacing | 0 mm suspension height | two-part; 40 mm mineral wool 45 kg/m³ | αw0.40 | |
| Rd 1.5-22% | 200 mm baffle height, 50 mm thickness | 150 mm axis spacing | 200 mm suspension height | one-part; 40x40 mm mineral wool 45 kg/m³ in PE film above the upper pipe row; ALP, 2 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 58 % | αw0.40 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; without filling | αw0.35 | |
| Rd 1.5-22% | 300 mm baffle height, 40 mm thickness | 600 mm axis spacing | 0 mm suspension height | two-part; without filling; cooling coil 1795x70, 2 pipe rows, every baffle, coverage ratio 47 % | αw0.35 | |
| Rd 1.5-22% | 150 mm baffle height, 40 mm thickness | 600 mm axis spacing | 200 mm suspension height | two-part; 40 mm mineral wool 50 kg/m³ | αw0.30 |
Absorber class: A
Test report: B105629/113
Institute: Müller-BBM Building Solutions
Test setup: two-part; absorber layer 30 mm mineral wool 45 kg/m³ in PE, with 10 mm wooden battens underneath
Measured values as a table (74 measurements)
| Build-up | αw | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rd 1.5-22% · 150 mm baffle height, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.65 | C | 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, 40 mm thickness · 300 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.45 | D | 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, 40 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.50 | D | 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, 40 mm thickness · 300 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.40 | D | 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, 40 mm thickness · 600 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.30 | D | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.70 | C | 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, 40 mm thickness · 300 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.60 | C | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.65 | C | 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, 40 mm thickness · 300 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.50 | D | 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, 40 mm thickness · 600 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.45 | D | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.85 | B | 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, 40 mm thickness · 300 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.70 | C | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.60 | C | 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, 40 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.85 | B | 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, 40 mm thickness · 300 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.70 | C | 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, 40 mm thickness · 600 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.60 | C | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; without filling · with acoustic fleece | 0.35 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; without filling; cooling coil 1795x70, 2 pipe rows, every baffle, coverage ratio 47 % · with acoustic fleece | 0.35 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.50 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm sheep wool 28 kg/m³ · with acoustic fleece | 0.50 | D | 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, 32 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.50 | D | 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, 50 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 50 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³; cooling coil 1795x80, 2 pipe rows, every baffle, coverage ratio 53 % · with acoustic fleece | 0.50 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³; cooling coil 1795x70, 2 pipe rows, every baffle, coverage ratio 47 % · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³; cooling coil 1795x60, 2 pipe rows, every baffle, coverage ratio 40 % · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.40 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ in PE film · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.60 | C | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.60 | C | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.60 | C | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.60 | C | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.40 | D | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.60 | C | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm mineral wool 35 kg/m³ fleece-laminated on one side · without fleece | 0.60 | C | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · one-part; 40 mm PE-polyester wool 20 kg/m³ · without fleece | 0.40 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · one-part; 2x20 mm PE-polyester wool 20 kg/m³ · without fleece | 0.40 | D | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on both sides, every baffle, coverage ratio 60 % · with acoustic fleece | 0.65 | C | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on both sides, every 2nd baffle, coverage ratio 30 % · with acoustic fleece | 0.60 | C | 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, 50 mm thickness · 300 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on both sides, every 2nd baffle, coverage ratio 30 % · with acoustic fleece | 0.50 | D | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³; cooling coil 1585x75, 2 pipe rows, 110 mm grid, on one side, every baffle, coverage ratio 30 % · with acoustic fleece | 0.65 | C | 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, 50 mm thickness · 600 mm axis spacing · 200 mm suspension height · two-part; 50 mm mineral wool 45 kg/m³ · with acoustic fleece | 0.40 | D | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 50 mm mineral wool 45 kg/m³ · with acoustic fleece | 0.60 | C | 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, 50 mm thickness · 600 mm axis spacing · 200 mm suspension height · two-part; 50 mm mineral wool 45 kg/m³ · with acoustic fleece | 0.45 | D | 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, 50 mm thickness · 600 mm axis spacing · 200 mm suspension height · two-part; 50 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.45 | D | 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, 50 mm thickness · 600 mm axis spacing · 400 mm suspension height · two-part; 50 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.45 | D | 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, 40 mm thickness · 600 mm axis spacing · 400 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.45 | D | 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, 40 mm thickness · 600 mm axis spacing · 600 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.45 | D | 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, 40 mm thickness · 600 mm axis spacing · 800 mm suspension height · two-part; 40 mm mineral wool 50 kg/m³ · with acoustic fleece | 0.50 | D | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³; cooling coil 2580x110, 1 pipe row, on both sides, every baffle, coverage ratio 67 % · with acoustic fleece | 0.70 | C | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³; slotted cooling coil 2500x75 and 2560x75, 2 pipe rows, 110 mm grid, on both sides, every baffle, coverage ratio 43 % · with acoustic fleece | 0.75 | C | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³; cooling coil 2580x75, 3 pipe rows, 110 mm grid, on both sides, every baffle, coverage ratio 69 % · with acoustic fleece | 0.80 | B | 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, 40 mm thickness · 600 mm axis spacing · 40 mm suspension height · two-part; absorber layer 30 mm mineral wool 45 kg/m³ in PE, with 10 mm wooden battens underneath · with acoustic fleece | 0.75 | C | 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, 40 mm thickness · 600 mm axis spacing · 240 mm suspension height · two-part; absorber layer 30 mm mineral wool 45 kg/m³ in PE, with 10 mm wooden battens underneath · with acoustic fleece | 0.90 | A | 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, 40 mm thickness · 100 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³ · with acoustic fleece | 0.50 | D | 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, 40 mm thickness · 150 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 45 kg/m³ · with acoustic fleece | 0.40 | D | 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, 30 mm thickness · 50 mm axis spacing · 200 mm suspension height · P30-System; absorber layer 40 mm PE-polyester wool 20 kg/m³ · without fleece | 0.75 | C | 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, 30 mm thickness · 50 mm axis spacing · 400 mm suspension height · P30-System; absorber layer 40 mm PE-polyester wool 20 kg/m³ · without fleece | 0.80 | B | 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, 30 mm thickness · 50 mm axis spacing · 200 mm suspension height · P30-System; absorber layer 40 mm mineral wool 55 kg/m³ in PE film · without fleece | 0.75 | C | 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, 30 mm thickness · 50 mm axis spacing · 200 mm suspension height · P30-System; absorber layer 30 mm mineral wool 80 kg/m³ in PE film · without fleece | 0.75 | C | 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, 50 mm thickness · 150 mm axis spacing · 50 mm suspension height · two-part; without filling; cooling coil acoustic guide profile 1610x75, 1 pipe row, on one side, every baffle, coverage ratio 22 % · with acoustic fleece | 0.45 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 30 mm mineral wool 100 kg/m³ in PE film · with acoustic fleece | 0.50 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm melamine resin foam, 9 kg/m³ · with acoustic fleece | 0.60 | C | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · one-part; 40 mm melamine resin foam, 9 kg/m³ · without fleece | 0.55 | D | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · one-part; 80x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 29 % · without fleece | 0.50 | D | 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, 50 mm thickness · 150 mm axis spacing · 200 mm suspension height · one-part; 40x40 mm mineral wool 45 kg/m³ in PE film above the upper pipe row; ALP, 2 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 58 % · without fleece | 0.40 | D | 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, 50 mm thickness · 150 mm axis spacing · 225 mm suspension height · one-part; 80x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 39 % · without fleece | 0.45 | D | 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, 50 mm thickness · 150 mm axis spacing · 225 mm suspension height · one-part; 40x40 mm mineral wool 45 kg/m³ in PE film in baffles with ALP; other baffles with 150x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every 2nd baffle, ALP at the bottom of the baffle; other baffles with mineral wool only; baffles with ALP and mineral wool alternating, coverage ratio 39 % · without fleece | 0.50 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · one-part; 150x40 mm mineral wool 45 kg/m³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 19 % · without fleece | 0.45 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · two-part; 40 mm mineral wool 12-25 kg/m² in PE film SDE A2 · with acoustic fleece | 0.55 | D | 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, 40 mm thickness · 600 mm axis spacing · 0 mm suspension height · one-part; 40 mm mineral wool 12-25 kg/m² in PE film SDE A2 · without fleece | 0.55 | D | 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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