Standard Specifiion for Perlite Loose Fill Insulation: C553 13(2019) Standard Specifiion for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Appliions: C592 16: Standard Specifiion for Mineral Fiber Blanket Insulation and BlanketType Pipe Insulation (MetalMesh Covered) (Industrial Type) C665 17