Pipe Fitting Insulation Insulation Material Mineral Wool Installation Style Unslit Inside Diameter 1 1/8 in Wall Thickness 1 in Form 90 Degrees Elbow Minimum Operating Temperature 0 Degrees F Maximum Operating Temperature 1 200 Degrees F R Value 4.4 Color Green For Pipe Size 3/4 in Flame Spread Index 25 Foam Cell Type Open Plenum Rating Plenum Rated Flexibility Rigid For Tube Outside Diameter 1 1/8 in