Description 6Pcs 30030050mm Triangle Insulation Reduce Noise Sponge Foam CottonSpecification Material environmentally polyurethane foamColor blackSize 30x30cmThickness 5cmFeatures 1 Suitable for sound recording studio listening room home theater KTV and all kinds of public places 2 The sponge is the ideal sound insulation sound absorbing heat insulation material 3 Sound absorbing sponge is on the basis of sponge for further processing acoustic inside the sponge and reflection of the increase in the number so as to achieve the noise sound absorbing effect Package Included 6 Insulation Reduce Noise SpongeMore Details