The easiest way to improve the sound insulation of an apartment door🚪

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Komentáře • 2

  • @ruebene2223
    @ruebene2223 Před 2 lety +1

    Great tip!

    •  Před 2 lety +1

      I did a before/after measurement once and got +7 dB improvement. =) An airtight seal is critical for sound insulation at higher frequencies