Duct Insulation, Board, Material Fiberglass, 3 lb Density, Width 24 in, Duct Insulation, 4 ft Length, All Service Jacket Jacket Material, Color White, Thickness 2 in, Approx. R Value 8.7, Temp. Range -32 to 450 F Unfaced Side, -32 to 150 F Faced Side, Standards ASTM C612, Type IA, ASTM C612 TypeIB, ASTM C553 Type III, HH-I-558C, HH-I-558B, ASTM E-84, NRC 1.36, MIL-I-24244C,UL723, NFPA255,ASTM C795, ASTM C1136
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