Pipe Insulation, Insulation Material Buna-N Rubber/PVC, Installation Style Slit with Adhesive and Flap, Inside Diameter 2 7/8 in, Wall Thickness 3/4 in, Overall Length 6 ft, Minimum Operating Temperature -70 Degrees F, Maximum Operating Temperature 220 Degrees F, Jacket Material Unfaced, Color Black, R Value 4.7, Form Tube, For Pipe Size 2 1/2 in, Flame Spread Index 123, Smoke Developed Index 148, Foam Cell Type Closed, Plenum Rating Plenum Rated, Flexibility Flexible. This item has been restricted from sale in the following state (s): []