Pipe Insulation, Insulation Material Melamine, Installation Style Hinged, Inside Diameter 2 1/8 in, Wall Thickness 1 in, Overall Length 4 ft, Minimum Operating Temperature -40 Degrees F, Maximum Operating Temperature 350 Degrees F, Jacket Material Unfaced, Color Gray, R Value 5.23, Form Tube, For Copper Tube Size 2 1/8 in, Flame Spread Index 25, Smoke Developed Index 50, Foam Cell Type Open, Plenum Rating Plenum Rated, Flexibility Flexible, For Tube Outside Diameter 2 1/8 in. This item has been restricted from sale in the following state (s): []