High Temperature Insulation Density 8 lb/cu ft Facing Material FSK Facing Flexibility Not Applicable Foam Cell Type Open Form Board Insulation Color Green Insulation Material Mineral Wool Maximum Operating Temperature 1 200 Degrees F Minimum Operating Temperature 0 Degrees F Overall Length 4 ft Overall Width 24 in R Value 8 Thickness 2 in Standards ASTM C612 Type 1VB C665 C795 Stainless Steel Chemically Inert E136 E84