... mm, 605x1210 mmMaterialWet Formed mineral fiber SurfaceFactory Applied Vinyl Latex PaintNoise reduction coefficient(NRC) 0.4-0.6Humidity ... ,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 box, ...