The solution for higher sound insulation from exterior noise. This interior attachment reduces outside noise by an additional 6dB on top of the sound reduction inherent to each Lunos system: 42dB for full-size Lunos e2 fans / 38dB for Lunos e2 short.
- Sound insulation jacket 9/IBS: increase of standardized sound level by as much as 6 dB, reduction of intrinsic noise.
- Includes washable filter. Filter class G2 and G3 available.