4-1/8" x 1-27/64" Elastomeric Elbow Pipe Fitting Insulation, 1" Wall, K-Flex Usa, Mfr#: 801-LRE-100418

Pipe Fitting Insulation, Insulation Material Buna-N Rubber/PVC, Installation Style Unslit, Inside Diameter 4 1/8 in, Wall Thickness 1 in, Form 90 Degrees Elbow, Minimum Operating Temperature -297 Degrees F, Maximum Operating Temperature 220 Degrees F, R Value 5.9, Color Black, For Pipe Size 3 1/2 in, Flame Spread Index 25, Foam Cell Type Closed, Plenum Rating Plenum Rated, Flexibility Flexible, For Tube Outside Diameter 4 1/8 in, Resistance Properties Antimicrobial, Flame/Fire Retardant