Duct Liner, Overall Width 48 in, Overall Length 50 ft, Thickness 2 in, Material Polyester, Jacket Material Foil Scrim Kraft, Insulation Value 8, Insulation Density 1.4 lb, Product Type Duct Insulation, Shape Rectangular, Round, Color Silver, Maximum Temperature Rating 250 Degrees F, Minimum Temperature Rating Not Applicable, Material Thickness Not Applicable, Series PolyArmor, Inside Diameter 3 in