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Noise filter for ventilation systems
Model: NA Series
Always install in the ventilation systems after the fan, and/or the filter, and /or the box or duct heater.
| Model | Code | A | B | C |
| FSD160 | ALV132 | 266 | 150 | 1000 |
| FSD200 | ALV1524 | 316 | 200 | 1000 |
| FSD250 | ALV1513 | 367 | 250 | 1000 |
| FSD315 | ALV570 | 417 | 315 | 1000 |
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