Ceramic Fiber Insulation Insulation Length 25 ft Insulation Width 48 in Insulation Density 8 cu ft/lb Insulation Body Material Aluminum Silicate Fiber Wall Thickness - Insulation 1 in Insulation Approx. R Value @ 1000F 0.75 Insulation Max. Temp. 2 300 Degrees F Insulation Continuous Use Temp. 1 922 Degrees F Pipe Insulation Item Ceramic Fiber Insulation Standards UL 723 Features Pipe Insulation Item: Ceramic Fiber Insulation Insulation Length: 25 ft Insulation Width: 48 in Wall Thickness - Insulation: 1 in Insulation Density: 8 cu ft/lb Insulation Max. Temp.: 2 300 Degrees F Insulation Continuous Use Temp.: 1 922 Degrees F Insulation Approx. R Value @ 1000F: 0.75 Length: 25 ft. Insulation Body Material: Aluminum Silicate Fiber Color: White Material: Aluminum Silicate Fiber Approx. R Value: 0.75 Wall Thickness: 1 Item: Ceramic Fiber Insulation Standards: UL 723 Zoro Benefits: 7 000+ Brands. Free Shipping. Hassle Free Returns.