Item:glass wool board Applications: Heat and coldness preservation and deadening of roof. Heat and coldness preservation of buildings. Deadening treatment of recreational places, cinema, theater, TV station, broadcast station, laboratory, etc. Specification: Density: 24-300kg/m³ (As per customer's requirement) Fiber Diameter: <8μm Conductivity Coefficient: 0.038w/m. K (It depends on thickness) Safety Temperature for Use: -120º C -400º C Thickness: 20-80mm Length: 1200m Width: 600mm, 1200mm