Insulation Sheet, Insulation Material Buna-N Rubber/PVC, Insulation Color Black, Overall Length 4 ft, Overall Width 3 ft, Thickness 3/4 in, Minimum Operating Temperature -40 Degrees F, Backing Type Adhesive, Maximum Operating Temperature 200 Degrees F, Jacket Material Unfaced, R Value 3, Form Sheet, Flame Spread Index 25, Smoke Developed Index 50, Foam Cell Type Closed, Plenum Rating Plenum Rated, Flexibility Flexible