The present invention is directed to an acoustic ceiling panel having a firstmajor exposed surfaceopposite a second major exposed surface, the acoustic ceiling panelcomprising: a first layer having anupper surface opposite a lower surface, the first layer comprising: a firstbody comprising a first majorsurface opposite a second major surface and a side surface extending betweenthe first and second majorsurfaces, the first body being air-permeable； and a first attenuation coatingapplied to the first body； asecond layer having an upper surface opposite a lower surface, the secondlayer comprising: a secondbody comprising a first major surface opposite a second major surface and aside surface extendingbetween the first and second major surfaces, the second body being air-permeable； and a secondattenuation coating applied to the second body； and an adhesive presentbetween the first and secondlayers.
