Fural Acoustic Baffle
Acoustic Baffle
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 1.6 to 24 in.
Technical data
Material: galvanized steel
Surface: RAL 9010, powder coating 60–70 μm
Fire class (EN 13501-1): 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
Spacing
Gap / cavity
Surface
NRC
—
No NRC for arrays (ASTM C423)
Frequency values
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| Compare | Perforation | Size | Spacing | Gap / | Test setup | Value |
|---|---|---|---|---|---|---|
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 12 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 12 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 24 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 12 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 12 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 24 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 24 in baffle height, 1.6 in thickness | 12 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 24 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 24 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 24 in baffle height, 1.6 in thickness | 12 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 24 in baffle height, 1.6 in thickness | 24 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; without filling | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; without filling; cooling coil 1795x70, 2 pipe rows, every baffle, coverage ratio 47 % | — | |
| Rg 2.5-16% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rg 0.7-4% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in sheep wool 1.7 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.3 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 2 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 2 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³; cooling coil 71x3.1 in, 2 pipe rows, every baffle, coverage ratio 53 % | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³; cooling coil 71x2.8 in, 2 pipe rows, every baffle, coverage ratio 47 % | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³; cooling coil 71x2.4 in, 2 pipe rows, every baffle, coverage ratio 40 % | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ in PE film | — | |
| Rd 0.9-14% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rg 0.9-7% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rg 1.5-11% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rd 1.5-11% | 5.9 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | one-part; 1.6 in PE-polyester wool 1.2 lb/ft³ | — | |
| Rd 1.5-22% | 5.9 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | one-part; 2x0.79 in PE-polyester wool 1.2 lb/ft³ | — | |
| Rd 1.5-22% | 8.7 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on both sides, every baffle, coverage ratio 60 % | — | |
| Rd 1.5-22% | 8.7 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on both sides, every 2nd baffle, coverage ratio 30 % | — | |
| Rd 1.5-22% | 8.7 in baffle height, 2 in thickness | 12 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on both sides, every 2nd baffle, coverage ratio 30 % | — | |
| Rd 1.5-22% | 8.7 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on one side, every baffle, coverage ratio 30 % | — | |
| Rd 1.5-22% | 8.7 in baffle height, 2 in thickness | 24 in axis spacing | 7.9 in suspension height | two-part; 2 in mineral wool 2.8 lb/ft³ | — | |
| Rd 1.5-22% | 8.7 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 2 in mineral wool 2.8 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 2 in thickness | 24 in axis spacing | 7.9 in suspension height | two-part; 2 in mineral wool 2.8 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 2 in thickness | 24 in axis spacing | 7.9 in suspension height | two-part; 2 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 2 in thickness | 24 in axis spacing | 16 in suspension height | two-part; 2 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 16 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 24 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 31 in suspension height | two-part; 1.6 in mineral wool 3.1 lb/ft³ | — | |
| Rd 1.5-22% | 5.9 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 102x4.3 in, 1 pipe row, on both sides, every baffle, coverage ratio 67 % | — | |
| Rd 1.5-22% | 8.7 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³; slotted cooling coil 98x3 in and 101x3 in, 2 pipe rows, 4.3 in grid, on both sides, every baffle, coverage ratio 43 % | — | |
| Rd 1.5-22% | 12 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 102x3 in, 3 pipe rows, 4.3 in grid, on both sides, every baffle, coverage ratio 69 % | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 1.6 in suspension height | two-part; absorber layer 1.2 in mineral wool 2.8 lb/ft³ in PE, with 0.39 in wooden battens underneath | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 9.4 in suspension height | two-part; absorber layer 1.2 in mineral wool 2.8 lb/ft³ in PE, with 0.39 in wooden battens underneath | — | |
| Rd 1.5-22% | 2 in baffle height, 1.6 in thickness | 3.9 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³ | — | |
| Rd 1.5-22% | 2 in baffle height, 1.6 in thickness | 5.9 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 2.8 lb/ft³ | — | |
| None (closed) | 1.6 in baffle height, 1.2 in thickness | 2 in axis spacing | 7.9 in suspension height | P30-System; absorber layer 1.6 in PE-polyester wool 1.2 lb/ft³ | — | |
| None (closed) | 1.6 in baffle height, 1.2 in thickness | 2 in axis spacing | 16 in suspension height | P30-System; absorber layer 1.6 in PE-polyester wool 1.2 lb/ft³ | — | |
| None (closed) | 1.6 in baffle height, 1.2 in thickness | 2 in axis spacing | 7.9 in suspension height | P30-System; absorber layer 1.6 in mineral wool 3.4 lb/ft³ in PE film | — | |
| None (closed) | 1.6 in baffle height, 1.2 in thickness | 2 in axis spacing | 7.9 in suspension height | P30-System; absorber layer 1.2 in mineral wool 5 lb/ft³ in PE film | — | |
| Rd 1.5-22% | 5.9 in baffle height, 2 in thickness | 5.9 in axis spacing | 2 in suspension height | two-part; without filling; cooling coil acoustic guide profile 1610x75, 1 pipe row, on one side, every baffle, coverage ratio 22 % | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.2 in mineral wool 6.2 lb/ft³ in PE film | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in melamine resin foam, 0.56 lb/ft³ | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | one-part; 1.6 in melamine resin foam, 0.56 lb/ft³ | — | |
| Rd 1.5-22% | 7.9 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | one-part; 3.1x1.6 in mineral wool 2.8 lb/ft³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 29 % | — | |
| Rd 1.5-22% | 7.9 in baffle height, 2 in thickness | 5.9 in axis spacing | 7.9 in suspension height | one-part; 1.6x1.6 in mineral wool 2.8 lb/ft³ 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 % | — | |
| Rd 1.5-22% | 5.9 in baffle height, 2 in thickness | 5.9 in axis spacing | 8.9 in suspension height | one-part; 3.1x1.6 in mineral wool 2.8 lb/ft³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 39 % | — | |
| Rd 1.5-22% | 5.9 in baffle height, 2 in thickness | 5.9 in axis spacing | 8.9 in suspension height | one-part; 1.6x1.6 in mineral wool 2.8 lb/ft³ in PE film in baffles with ALP; other baffles with 5.9x1.6 in mineral wool 2.8 lb/ft³ 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 % | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | one-part; 5.9x1.6 in mineral wool 2.8 lb/ft³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 19 % | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | two-part; 1.6 in mineral wool 2.5-5.1 lb/ft² in PE film SDE A2 | — | |
| Rd 1.5-22% | 12 in baffle height, 1.6 in thickness | 24 in axis spacing | 0 in suspension height | one-part; 1.6 in mineral wool 2.5-5.1 lb/ft² in PE film SDE A2 | — |
Test report: 60410840-001/1
Institute: TÜV Rheinland
Test setup: two-part; 1.6 in mineral wool 3.1 lb/ft³
Measured values as a table (74 measurements)
| 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 12 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 12 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 24 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 12 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 12 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 24 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 24 in baffle height, 1.6 in thickness · 12 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 24 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 24 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 24 in baffle height, 1.6 in thickness · 12 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 24 in baffle height, 1.6 in thickness · 24 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; without filling · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; without filling; cooling coil 71x2.8 in, 2 pipe rows, every baffle, coverage ratio 47 % · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in sheep wool 1.7 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.3 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 2 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 2 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³; cooling coil 71x3.1 in, 2 pipe rows, every baffle, coverage ratio 53 % · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³; cooling coil 71x2.8 in, 2 pipe rows, every baffle, coverage ratio 47 % · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³; cooling coil 71x2.4 in, 2 pipe rows, every baffle, coverage ratio 40 % · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ in PE film · with acoustic fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · one-part; 2x0.79 in mineral wool 2.2 lb/ft³ fleece-laminated on one side · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · one-part; 1.6 in PE-polyester wool 1.2 lb/ft³ · without fleece | – | 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% · 5.9 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · one-part; 2x0.79 in PE-polyester wool 1.2 lb/ft³ · without fleece | – | 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% · 8.7 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on both sides, every baffle, coverage ratio 60 % · with acoustic fleece | – | 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% · 8.7 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on both sides, every 2nd baffle, coverage ratio 30 % · with acoustic fleece | – | 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% · 8.7 in baffle height, 2 in thickness · 12 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on both sides, every 2nd baffle, coverage ratio 30 % · with acoustic fleece | – | 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% · 8.7 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 62x3 in, 2 pipe rows, 4.3 in grid, on one side, every baffle, coverage ratio 30 % · with acoustic fleece | – | 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% · 8.7 in baffle height, 2 in thickness · 24 in axis spacing · 7.9 in suspension height · two-part; 2 in mineral wool 2.8 lb/ft³ · with acoustic fleece | – | 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% · 8.7 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 2 in mineral wool 2.8 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 2 in thickness · 24 in axis spacing · 7.9 in suspension height · two-part; 2 in mineral wool 2.8 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 2 in thickness · 24 in axis spacing · 7.9 in suspension height · two-part; 2 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 2 in thickness · 24 in axis spacing · 16 in suspension height · two-part; 2 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 16 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 24 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 31 in suspension height · two-part; 1.6 in mineral wool 3.1 lb/ft³ · with acoustic fleece | – | 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% · 5.9 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 102x4.3 in, 1 pipe row, on both sides, every baffle, coverage ratio 67 % · with acoustic fleece | – | 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% · 8.7 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³; slotted cooling coil 98x3 in and 101x3 in, 2 pipe rows, 4.3 in grid, on both sides, every baffle, coverage ratio 43 % · with acoustic fleece | – | 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% · 12 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³; cooling coil 102x3 in, 3 pipe rows, 4.3 in grid, on both sides, every baffle, coverage ratio 69 % · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 1.6 in suspension height · two-part; absorber layer 1.2 in mineral wool 2.8 lb/ft³ in PE, with 0.39 in wooden battens underneath · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 9.4 in suspension height · two-part; absorber layer 1.2 in mineral wool 2.8 lb/ft³ in PE, with 0.39 in wooden battens underneath · with acoustic fleece | – | 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% · 2 in baffle height, 1.6 in thickness · 3.9 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³ · with acoustic fleece | – | 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% · 2 in baffle height, 1.6 in thickness · 5.9 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 2.8 lb/ft³ · with acoustic fleece | – | 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) · 1.6 in baffle height, 1.2 in thickness · 2 in axis spacing · 7.9 in suspension height · P30-System; absorber layer 1.6 in PE-polyester wool 1.2 lb/ft³ · without fleece | – | 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) · 1.6 in baffle height, 1.2 in thickness · 2 in axis spacing · 16 in suspension height · P30-System; absorber layer 1.6 in PE-polyester wool 1.2 lb/ft³ · without fleece | – | 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) · 1.6 in baffle height, 1.2 in thickness · 2 in axis spacing · 7.9 in suspension height · P30-System; absorber layer 1.6 in mineral wool 3.4 lb/ft³ in PE film · without fleece | – | 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) · 1.6 in baffle height, 1.2 in thickness · 2 in axis spacing · 7.9 in suspension height · P30-System; absorber layer 1.2 in mineral wool 5 lb/ft³ in PE film · without fleece | – | 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% · 5.9 in baffle height, 2 in thickness · 5.9 in axis spacing · 2 in suspension height · two-part; without filling; cooling coil acoustic guide profile 63x3 in, 1 pipe row, on one side, every baffle, coverage ratio 22 % · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.2 in mineral wool 6.2 lb/ft³ in PE film · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in melamine resin foam, 0.56 lb/ft³ · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · one-part; 1.6 in melamine resin foam, 0.56 lb/ft³ · without fleece | – | 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% · 7.9 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · one-part; 3.1x1.6 in mineral wool 2.8 lb/ft³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 29 % · without fleece | – | 0.18 | 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% · 7.9 in baffle height, 2 in thickness · 5.9 in axis spacing · 7.9 in suspension height · one-part; 1.6x1.6 in mineral wool 2.8 lb/ft³ 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 | – | 0.16 | 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% · 5.9 in baffle height, 2 in thickness · 5.9 in axis spacing · 8.9 in suspension height · one-part; 3.1x1.6 in mineral wool 2.8 lb/ft³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 39 % · without fleece | – | 0.20 | 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% · 5.9 in baffle height, 2 in thickness · 5.9 in axis spacing · 8.9 in suspension height · one-part; 1.6x1.6 in mineral wool 2.8 lb/ft³ in PE film in baffles with ALP; other baffles with 5.9x1.6 in mineral wool 2.8 lb/ft³ 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 | – | 0.17 | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · one-part; 5.9x1.6 in mineral wool 2.8 lb/ft³ in PE film; ALP, 1 pipe row, on both sides, every baffle, ALP at the bottom of the baffle, coverage ratio 19 % · without fleece | – | 0.11 | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · two-part; 1.6 in mineral wool 2.5-5.1 lb/ft² in PE film SDE A2 · with acoustic fleece | – | 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% · 12 in baffle height, 1.6 in thickness · 24 in axis spacing · 0 in suspension height · one-part; 1.6 in mineral wool 2.5-5.1 lb/ft² in PE film SDE A2 · without fleece | – | 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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