... .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-keeping, ... energy-saving, heat-insulatingPatternMineral Fiber Tile :Pine holes,fine fissured ,dune surface ,small ...