Pipe Insulation, Insulation Material Polyethylene, Installation Style Semi-Slit, Inside Diameter 2 in, Wall Thickness 3/8 in, Overall Length 6 ft, Minimum Operating Temperature -160 Degrees F, Maximum Operating Temperature 200 Degrees F, Jacket Material Unfaced, Color Black, R Value 1.8, Form Tube, For Copper Tube Size Not Applicable, For Pipe Size 1 1/2 in, Flame Spread Index 25, Smoke Developed Index 50, Foam Cell Type Not Applicable, Plenum Rating Plenum Rated, Flexibility Not Applicable