Knauf Insulation Atmosphere™ Air Duct Board with ECOSE® Technology is a rigid glass mineral wool board faced on one side with a foil-scrim-kraft (FSK) vapor retarder and with a lightweight non-woven mat on the airstream surface. It is used to fabricate rectangular or Max10 air duct systems. Available in two stiffness ratings, EI-475 or EI-800. Both types are available with butt edge or factory molded male-female shiplap edges.
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