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Construction Features
The Flexmaster U.S.A.® Thermo Sleeve contains the R6.0 insulation and outer jacket only. It is made to easily slip over flexible air duct.
Vapor Barrier
Available in a black polyethylene or reinforced aluminum material. Both are fire retardant, have excellent strength at low temperatures, and will not age harden.
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Type TSB
Fire-Retardant
Polyethylene Outer
Perm. rating = .10 grains
per square foot, per hour,
per inch of mercury |
Type TSM
Reinforced, Metalized
Outer Jacket
Perm. rating = .05 grains
per square foot, per hour,
per inch of mercury |
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Available in 25 ft Standard Lengths
Sizes to cover diameters from 4" thru 10", 12", 14", 15", 16", 18", 20", 24"
Insulation Options: R6.0
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