Fiberglass acoustic wool is made of natural mineral and some chemical substances. Mixed together and melted into glass, the melted state has external forces to be flocculent fine fibers, which cross and intertwine each other with many small gaps in between. It is a typical perforated sound absorbing material good with sound absorbing performances. It can be used for the ceiling, wall panel and reverberation time. Empty spaces behind has the same sound absorbing performance as the same thickness of the fiberglass behind, especially in low and medium frequencies.
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