Ceramic Fiber Insulation, Insulation Material Aluminum Silicate, Overall Length 12 in, Overall Width 8 in, Thickness 1 in, Maximum Use Temperature 2,300 Degrees F, Density 6 lb/cu ft, R Value @ 1000F 1.06, Form Roll, Flexibility Flexible, Standards UL 723, Insulation Width 8 in, Pipe Insulation Item Ceramic Fiber Insulation, Maximum Continuous Use Temperature 1,922 Degrees F