California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Pipe Insulation, Insulation Material Fiberglass, Installation Style Slit with Adhesive and Flap, Inside Diameter 5/8 in, Wall Thickness 1/2 in, Overall Length 3 ft, Minimum Operating Temperature 0 Degrees F, Maximum Operating Temperature 1, 000 Degrees F, Facing Material ASJ Facing, Color Tan, R Value 4.5, Form Tube, For Copper Tube Size 5/8 in, For Pipe Size 3/8 in, Flame Spread Index 25, Smoke Developed Index 50, Foam Cell Type Not Applicable, Plenum Rating Plenum Rated