Pipe Fitting Insulation Insulation Material Fiberglass Installation Style Slit Inside Diameter 3/4 in Wall Thickness 2 in Form Tee Minimum Operating Temperature 0 Degrees F Maximum Operating Temperature 450 Degrees F R Value 10 Color White For Pipe Size 3/4 in Standards ASTM C379 ASTM C547 ASTM E84 Outside Diameter 4 3/4 in