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METAL B-L 302
Knauf
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METAL B-L 302
| Nrc | 0.75 |
| Class | C |
| Pitch | 90° straight |
| Rw db | 10 |
| Shape | round |
| Border | over border perforated |
| Cac db | 20 |
| Colour | black |
| Alpha w | 0.65(LM) |
| Dnfw db | 19 |
| Material | non-woven acoustic fleece |
| Cavity mm | 200 |
| Installation | bonded to tile back |
| Weight kg m2 | 5.0 - 6.9 |
| Fire standard | EN 13501-1 |
| Open area pct | 1.5 |
| Acoustic class | C |
| Alpha p 125 hz | 0.5 |
| Alpha p 250 hz | 0.85 |
| Alpha p 500 hz | 0.9 |
| Alpha p 1000 hz | 0.65 |
| Alpha p 2000 hz | 0.6 |
| Alpha p 4000 hz | 0.5 |
| Perforation code | Rg 0701 |
| Perforation name | Extramicro Perforation |
| Available colours | RAL 9016, RAL 9010, RAL 9006, RAL 9007, RAL 9005 |
| Acoustic standards | EN ISO 354, EN ISO 10848-2, EN ISO 10140-2 |
| Indoor air quality | A+, E1, IAC Gold |
| Options on request | dimensions, shapes, post-coated aluminium, perforations, RAL & NCS colours, BioGuard finish, wood effect finish, acoustic infills, cut-outs, grid alternatives |
| Steel gauge max mm | 0.7 |
| Humidity resistance | 90% RH |
| Perforation size mm | 0.7 |
| Acoustic infill code | VLSRX |
| Recycled content pct | 17.3 |
| Light reflectance pct | 83 |
| Recycled content year | 2023 |
| Reaction to fire class | A2-s1, d0 |
| Light reflectance colour | RAL 9010 |
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