FOAMGLAS Fitting Insulation,Elbow,4-1/2 In. ID

Pipe Fitting Insulation; Insulation Material Cellular Glass; Installation Style Slit in Half; Inside Diameter 4 1/2 in; Wall Thickness 1 1/2 in; Form 90 Degrees Elbow; Minimum Operating Temperature -450 Degrees F; Maximum Operating Temperature 900 Degrees F; R Value 5.2; Color Black; For Pipe Size 4 in; Flame Spread Index 25; Foam Cell Type Closed; Plenum Rating Plenum Rated; Flexibility Rigid; For Tube Outside Diameter 4 1/2 in