Semi-rigid acoustic fiber glass insulation panel
NOISE REDUCER™ Certainteed

NoiseReducer products are designed for use in commercial and residential wall and ceiling assemblies to effectively reduce transmission of airborne sound and provide thermal insulation.
NoiseReducer Sound Control Batts are designed for wood stud interior walls and floors to help you add %u201Cthe sounds of silence%u201D to any home, as well as helping you differentiate yourself from your competition. Quite simply, NoiseReducer Sound Control Batts provide a sound-absorber that fills the void between interior wood studs. This absorber effectively breaks the path of sound. In other words, NoiseReducer batts keep the peace in new homes and work environment... limiting sound levels without limiting normal activity.