Polyester Acoustic Wadding DIBONS Polyester Acoustic Wadding is a white, polyester fiber fibre insulation used for acoustical control, to provide a high-impact tackable panel, or wall tools, Surface, and for thermal insulation. Sizes available are: DIBONS Polyester Acoustic Wadding is available in variety of thicknesses from 25 mm To 50 mm and in both quarter and full (1 Mtr x 2 Mtr) sheets. It is available in White Color