ASC WallWool Batting has been formulated to provide maximum sound attenuation in a relatively thin package. There is no fiberglass resin adhesive in this material and no odor. It combines refractory wool that, pound for pound, has twice the acoustic efficiency fiberglass batts. We’ve encapsulated this product inside an acoustically transparent envelope with tabs for easy installation. The result is that the highly fibrous, non-asbestos sound absorbing material is contained in an easy to apply insulation batting. Available faced or unfaced.