... ,concealed edge,shiplap edge ,liner shiplap edge,adhesive and nails edge ,etc.Color white Density 280-320kg/m3Material ... availableNoiseReductioncoefficient :NRC 0.4-0.6 depending on the pattern and the thickness Humidity Resistance: >=80% CAC :>=35 Light ... absorbing,resistance to fire,warm-keeping,energy-saving, Certificate: ISO9001:2008 ISO 14001:2004 CE Certificate mineral wool ceiling board with CE