Insulate your new or existing 8 in. duct pipe with this Master Flow 8 in. Dia fiberglass insulation ductwork sleeve. Enjoy consistent air temperature and reduced system condensation and noise. On new pipe installation – simply slide the sleeve over the 8 in. duct pipe as it is being installed. For existing duct pipe up to 8 in. Dia – cut the jacket length wise (insulation is pre-cut) and wrap around the pipe.
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- Insulates duct pipe up to 8 in. Dia and up to 5 ft. in length
- R-8 value for effective insulation of your duct system
- Reduces mold-causing condensation and absorbs draft and duct system noise
- Meets ASTM E84-20 surface burn standard. Tested by an accredited third-party laboratory.















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