Marketing InformationKnauf Atmosphere® duct liner is a flexible, mat faced insulation bonded with ECOSE® technology. It is faced with a tightly bonded mat to give the airstream a smooth, tough surface, resisting damage during installation and operation. The encapsulant edge coating eliminates airstream flaring. Airstream surface mat facing is treated with an EPA registered anti-microbial agent to aid in the prevention of fungal and bacterial growth. Provides an optimum combination of efficient sound absorption, low thermal conductivity and minimal airstream surface friction.