Pipe Insulation Insulation Material Foam Installation Style Slit with Adhesive and Flap Inside Diameter 3 1/2 in Wall Thickness 1/2 in Overall Length 6 ft Minimum Operating Temperature -70 Degrees F Maximum Operating Temperature 220 Degrees F Facing Material Unfaced Color Black R Value 3 Form Tube For Copper Tube Size 2 7/8 in For Pipe Size 2 7/8 in Foam Cell Type Closed Flexibility Flexible For Tube Outside Diameter 2 7/8 in Resistance Properties Mold/Mildew-Resistant