Description 6Pcs 30x30x4cm Soundproofing Triangle Sound Absorbing Noise Foam TilesProduced by environmentally polyurethane foam In order to improve the opening steps andspecific acoustic characteristics make it not only has the sound absorption characteristicseffectively without any harm to human body Specifications Material polyurethane foamColor red blackSize 30x30cmThickness 4cmFeatures Suitable for sound recording studio listening room home theater KTV and all kinds of public places The sponge is the ideal sound insulation sound absorbing heat insulation material Sound absorbing sponge is on the basis of sponge for further processing acoustic inside the spongeand reflection of the increase in the number so as to achieve the noise sound absorbing effect Note Products have a sponge taste the taste is very light the product is environmentally friendly 100 non toxic and no methanol put it in a ventilated place to dry a few days will gradually dispersedPackage includes 6 x Foams