Manufacturer
Lindner Group
Lindner Group, Arnstorf: metal ceilings, heating and cooling ceilings, raised floors, wall and ceiling linings and the MUTE+ sound absorber line.
Documents
MUTE+ frame wall absorber
Description
Wall absorber made of polyester with fabric covering and visible frame. Free of mineral fibres and allergy-friendly, recycled content of up to 20 per cent, 100 per cent recyclable and reusable.
Technical data
Material: Polyester, cover fabric of polyester or wool
Surface: Fabric covering in the visible polyester frame
Up to fire class: B1 — per DIN 4102 by component: absorber and polyester cover fabric B1, wool cover fabric B2
Certifications: Oeko-Tex Standard 100 (S24-3191, Hohenstein HTTI), Indoor Air Comfort GOLD, emission class A+ (VOC, France)
Colours: Frame in 5 colours, cover fabrics of polyester or wool, 30 colours in the stock range
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 4 variants
NRC
0.95
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.65 | 1.00 | 1.00 | 0.95 | 0.90 |
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| Compare | Value |
|---|---|
| NRC0.95 | |
| Aobj2.60m² | |
| Aobj2.10m² | |
| Aobj1.50m² |
Test report: H220914M1/9a_rev00
NRC: 0.95 (derived from ISO 354 lab data)
Object area: 113 sq ft
Measured values as a table (4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 mm · 48 mm · absorber 2000 x 1000 mm (Aobj, m²) | – | 0.20 | 0.40 | 0.70 | 1.10 | 1.40 | 2.00 | 2.50 | 2.80 | 2.70 | 2.60 | 2.60 | 2.40 | 2.40 | 2.20 | 2.20 | 2.00 | 2.10 | 2.10 |
| 40 mm · 48 mm · absorber 1000 x 1000 mm (Aobj, m²) | – | 0.10 | 0.10 | 0.40 | 0.60 | 0.70 | 1.00 | 1.30 | 1.40 | 1.50 | 1.50 | 1.50 | 1.40 | 1.30 | 1.20 | 1.30 | 1.20 | 1.20 | 1.10 |
| 40 mm · 48 mm · absorber 1500 x 1000 mm (Aobj, m²) | – | 0.10 | 0.20 | 0.50 | 0.80 | 1.00 | 1.40 | 1.80 | 2.00 | 2.10 | 2.10 | 2.10 | 1.90 | 1.90 | 1.80 | 1.70 | 1.60 | 1.60 | 1.60 |
| 40 mm · plane absorber | 0.95 | 0.08 | 0.12 | 0.28 | 0.49 | 0.65 | 0.84 | 1.00 | 1.06 | 1.07 | 1.07 | 1.07 | 1.02 | 1.00 | 0.95 | 0.94 | 0.91 | 0.85 | 0.90 |
Measured values as a table (4 measurements)
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