... board is in rectangle with many choices of unit weight. The heat insulation materials are usually using "2b" centrifugal ... been widely applied for heat insulation of house wall, compartment; temperature keeping of computer rooms, refrigerator; denoise of power plants and pump ... ,25,30,40,50,75,100Sizemm1200*600 R-Value (ASTMC177 & ASTMC518)Heat Resistance Value (On 24)Thickness(mm)48kg/m356kg/m364kg ...