Insulation Sheet, Insulation Material EPDM, Insulation Color Black, Overall Length 75 ft, Overall Width 4 ft, Thickness 1/2 in, Minimum Operating Temperature -22 Degrees F, Backing Type Plain, Maximum Operating Temperature 248 Degrees F, Facing Material Unfaced, R Value 2.2, Form Roll, Flame Spread Index 25, Smoke Developed Index 50, Foam Cell Type Closed, Plenum Rating Plenum Rated, Flexibility Flexible