3-1/2" Closed Cell Glass Elbow Pipe Fitting Insulation, 1" Wall

Pipe Fitting Insulation, Insulation Material Cellular Glass, Installation Style Slit in Half, Inside Diameter 3 1/2 in, Wall Thickness 1 in, Form 90 Degrees Elbow, Minimum Operating Temperature -450 Degrees F, Maximum Operating Temperature 900 Degrees F, R Value 3.5, Color Black, For Pipe Size 3 in, Flame Spread Index 25, Foam Cell Type Closed, Plenum Rating Plenum Rated, Flexibility Rigid, For Tube Outside Diameter 3 1/2 in