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DuraVent 8645 6" Double Wall Black 45º Elbow

Item #: BCI1760872
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Product Details for the DuraVent 8645

DVL Collection 6" Double Wall Black 45º Elbow

The DVL 6" Double Wall Black Elbow is a component that is used in a typical venting installation. The double wall black elbow offsets obstructions as needed with an adjustable angle.


  • Inner Diameter: 6"
  • 45º Elbow Angle
  • Double Wall
  • UL Listed

DVL double-wall stove pipe completes the venting system when used with one of DuraVent’s chimney products, such as DuraTech or DuraPlus. DVL’s double-wall, air-insulated design reduces clearances to combustibles from 18” to 6”, the closest clearance to a wall of any connector pipe. DVL improves stove performance by maintaining high flue gas temperatures for a strong, steady draft. Because the inner wall is stainless steel the flue heats up faster, stays hotlonger, minimizes the formation of creosote, and has the same life expectancy as the chimney. Adjustable lengths eliminate the need for cutting or crimping.Required for Manufactured Home installations. See appliance manufacturer's installation instructions.

Looking for Simpson Dura-Vent? You found it! Simpson Dura-Vent has changed their name to DuraVent. DuraVent is a recognized technological leader in the venting industry. Consistently the first to market with new innovations in venting systems, DuraVent has captured a leadership position in emerging markets. DuraVent has patents for several products and continues to design safe and technologically advanced venting.The company's research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro. Scientifically proven materials and unequalled engineering make DuraVent products not only the best choice, or safest choice, but the only choice for professional quality venting products.

Our SKU: DuraVent 8645

This product is listed under the following manufacturer number(s):

*Denotes a finish or option that has been discontinued

6 Questions from the Community
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I just heard from DuraVent that the angle on 8646 can now be adjusted can you confirm that these are the new model?

The 8645 is the adjustable model.

Can the Duravent 8645 45 degree elbow be turn to a less degree or is it lock in a 45 degree?"

The DuraVent 8645 is non-adjustable unfortunately.

do the 45 degree elbows adjust to a smaller angle?

The DuraVent 8645 does not adjust to a smaller size.

I see in your "questions from the community" that the "8646" is now adjustable. What are the limits of adjustment?

It will go from straight pipe to 45 degrees.

The offset chart seems to be saying a back to back set of 8645 would have a 5-1/2" offset. Yes?

Yes, Exactly. A back to back set of 8645 would have a 5-1/2" offset.

what is the offset when the two 45 degree elbows are put together?

Two 8645 45 degree elbows put together would have a offset of 4.5"

DuraVent 8645 Technical Specs

Configuration Elbow
Elbow by Angle 45 (degree)
Fuel Type Wood
Manufacturer Warranty Lifetime Limited
Material Steel
Pipe Class Stove Pipe
Pipe Inside Diameter 6
Pipe Shape Round
Product Weight 3
UL Listed Yes
Vent Construction Double Wall
Vent Pipe Size 6

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