1/2" thick 2-1/2" ID tube with ASJ, Owens Corning, Mfr#: 722695

Pipe Insulation Tube, Insulation Material Fiberglass, Installation Style Slit with Adhesive and Flap, Inside Diameter 2 1/2 in, Wall Thickness 1/2 in, Overall Length 3 ft, Minimum Operating Temperature 0 Degrees F, Maximum Operating Temperature 850 Degrees F, Jacket Material ASJ Facing, Color White, Yellow, R Value 2.8, Form Tube, For Pipe Size 1/2 in, Flame Spread Index 25, Smoke Developed Index 50, Plenum Rating Plenum Rated, Flexibility Rigid, For Tube Outside Diameter 2 1/2 in