25mm Thickness Glass Wool Board, Acoustical Material 1m Length Glass Wool Panel Density 24-96kg/m3 Length 1000/1200mm Thickness 25-100mm Width 600/1200mm Thermal conductivity 0.036-0.049w/m*k Refractory temperature 300-450 Packing Plastic bag Package quantity 6-9pcs/bag R-values R 1.4-2.9 Water absorption short term(in 24 hours)