sponge basotect

...Barrier Basotect sponge is a type of acoustic sponge developed using the properties of Basotect material. Basotect material is a material known for its flame retardant properties, low density, high thermal insulation performance and high sound absorption. Basotect sponge with barrier, in addition to the Basotect material, is covered with a fireproof coating and a barrier layer used for sound insulation. This barrier layer reflects and absorbs high-frequency sound waves, increasing the sound insulation performance of the sponge.