DuraVent 45 Degree Adjustable Elbow B-Vent Chimney System

Size: 10" 45Degree Adjustable Elbow

Estimated Arrival: Between and . (To All Contiguous States)

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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.

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.

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.

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. 



  • Offsets obstructions as needed.
  • 45° Elbow in size 7”-30”. Elbows up to 10” are adjustable.
  • Sizes 12” and larger are not adjustable. Elbows must be supported when installed.
  • 100% Manufactured in the USA.
  • Limited Lifetime Warranty.


List of Other Components
Click Here to see components
18" and 36" Length Round Rigid Pipe

12" Length Adjustable Pipe

90Degree Adjustable Elbow(For 10" Round Gas Vent only)

45Degree Adjustable Elbow

Firestop Spacer

Storm Collar

High Wind Cap


DuraVent’s Type B Gas Vent system. Use with natural gas or liquid propane Category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.



Model 10GVL45 12GVL45
Size 10" 12"
Dimension A 5-1/2" 6-1/8" 
Dimension B 5-3/4" 6-1/4"
Dimension X - 13-7/8"
Dimension Y - 14"
Weight 42 lbs. 34 lbs.