Ceramic Fiber Insulation Insulation Material Aluminum Silicate Overall Length 5 ft Overall Width 4 ft 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 4 ft Pipe Insulation Item Ceramic Fiber Insulation Maximum Continuous Use Temperature 1 922 Degrees F For Piping System Industrial Process For Use On Pipe Insulation Insulation Color White