Pipe Fitting Insulation, Tee, Wall Thickness - Insulation 3/4 in, Insulation Body Material NBR/PVC, Insulation Color Black, Fits Tube Size 1 3/8 in, Fits Pipe Size - Pipe Insulation 1 in, Insulation Temp. Range -297 Degrees F to 220 Degrees F, Insulation Approx. R Value 5.2, Insulation Nominal I. D. 1 3/8 in, For Tube I. D. 1 1/4 in, Length 53/64 in, Width 2 7/8 in, For Use On Ducts and Tanks, Piping