... Mineral fiber acoustic ceiling tiles 1.higher NRC (0.55-0.65), 2.higher LR(0.9), 3.higher RH (90% ). Mineral Fiber Acoustic ... Ceiling Tiles: MaterialWet Formed mineral fiber SurfaceFactory Applied Vinyl Latex PaintNoise reduction ... , 13mm,14mm, 15mm, 16mm,18mm, 20mm etc.Mineral Fiber Tile Product FeatureSound absorbing,Resistance to fire, warm ...