Preformed fiberglass insulation for 90 elbows and tees eases installation and provides for greater thermal performance. Installs with 1" Pipe Fitting Insulation Tape No. 6WXE4, sold separately. Use 3" Pipe Insulation Tape Nos. 4LFJ2 and 4LFJ3 (sold separately) to seal butt joints.Specification: Item: Pipe Fitting InsulationFor Fitting Shape: TeeWall Thickness - Insulation: 2 inInsulation Body Material: FiberglassInsulation Color: WhiteFits Pipe Size - Pipe Insulation: 3/4 inInsulation Temp. Range: 0 Degrees F to 450 Degrees FInsulation Approx. R Value: 10Pipe Insulation Item: Pipe Fitting InsulationInsulation Nominal I.D.: 3/4 inFor Use On: PipingStandards: ASTM C379, ASTM C547Warning: California Residents: This product and/or packaging can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm.