3'' - 4'' DuraFlexAL Insulation Sleeve - 0820

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  • Diameter: 3-4"
  • 10 Feet in Length
  • Use with DuraFlex AL Pipe
  • UL Listed

Additional Informatio

The insulation sleeve is used to insulate DuraFlex AL to reduce condensation on the gas systems.

DuraVent Type B Gas Vent is designed to meet the rugged demands of the job site. The inner wall is recessed to eliminate damage in handling. DuraVent's innovative system for a lock-tight connection for Type B Gas Vent called DuraLock. See the alignment indicators meet; feel the ends grasp together; hear the snap as the connection firmly locks into place. Type B gas vents are not suitable for use with wood-burning or coal applications, industrial ovens, exhaust ranges and hoods, grease or pollution ducting, or as free-standing exhaust vents for high temperature applications. Type B Gas Vent has been engineered to heat up rapidly. It remains hot during the operation of the appliance with minimal condensation in the appliance and vent system. Pipe lengths are available in multiple lengths, 6 to 60 inches, with a full complement of adjustable and rigid fittings.

Installation Instructions


Chimney Relining Best Practices


Chimney Relining For Gas Appliances

Click here for Home Safety when relining chimneys for gas appliances.

Weight (lbs) 5.00
Brand DuraFlex AL, DuraVent,
Model 0820
Diameter 3 Inch
Wall Construction Single Wall
Manufacturer Limited Lifetime Warranty