Parafon Bass is a supplementary sound absorber that is placed above the visible acoustic ceiling in order to provide absorption in the plenum for different purposes. In combination with the soundproofing products Decibel Mass and Decibel Light, Bass achieves a significant improvement of the sound insulation via the suspended ceiling. Together with the sound absorbing acoustic ceilings, Bass primarily provides improved sound absorption of low frequencies. Parafon Bass is manufactured in non-combustible stone wool with a thin glass-fibre felt on the front and back, and thin spray painted edges. The product is not visible after installation and imperfections and colour variations will occur.