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Do egg cartons absorb sound?
Sandamukal Records - CAN YOU SOUNDPROOF A ROOM BY USING A EGG CARTONS/TRAYS? By: Tim Burke NO, egg cartons will not sound proof a room. An egg carton stapled up around the
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How to soundproof a room (Cheap Ways Listed)
Amazon.com: IZO All Supply Convoluted 2 Inch 12in W x 12in L Egg Crate Panels Acoustic Foam Sound Proof Wall Tiles, 6 Pack : Musical Instruments