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DuraVent DuraTech Elbow Kit: two bends to take the chimney around framing
The DuraVent DuraTech Elbow Kit is a pair of chimney elbows with a support strap. One elbow turns the chimney around a rafter or joist. The other brings it upright again. DuraTech is DuraVent’s double wall chimney, an insulated pipe with a 1 inch wall that takes over from the stovepipe at the ceiling or wall and runs up past the roof. Choose a matching 5, 6, 7, or 8 inch diameter and a fixed 15 or 30 degree angle. Each elbow swivels to face the needed direction. Stainless steel is available in every size, and galvalume steel in 6 to 8 inch sizes.
Pipe between the elbows is sold separately. More than one pipe length between them needs a second strap. Sections twist together without screws or bands, though a locking band is optional. A straight chimney needs at least 10 to 15 feet above the stove outlet. The cap must stand 3 feet above the roof exit and 2 feet above anything within 10 feet. Need another support strap? See the DuraVent DuraTech Adjustable Elbow Strap. The DuraVent DuraTech Elbow Kit ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 5DT-E15KSS | 5DT-E30KSS SKU: 6DT-E15K | 6DT-E30K | 6DT-E15KSS | 6DT-E30KSS SKU: 7DT-E15K | 7DT-E30K | 7DT-E15KSS | 7DT-E30KSS SKU: 8DT-E15K | 8DT-E30K | 8DT-E15KSS | 8DT-E30KSS
Applications
5″-8″ DuraTech is a double-wall, all-fuel chimney system for use with wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas, and zero-clearance fireplaces that are factory-built.
Materials and Construction
- 5”-8” diameter pipe features inner wall of .020” 430 stainless steel.
- Outer wall options of .016” 430 stainless steel or .021” galvalume steel.
- A Thermal Tech (ceramic refractory) blanket insulation is encased between walls.
- Stainless steel end rings seal the pipe.
DuraTech features light weight insulation, twist-lock fittings, support boxes with factory installed starter sections, elbows with 360° swivel base, select black finish pipe lengths, and five foot length pipe sections.
Listings
c-UL-us Listed to UL 103 HT and ULC S604 (MH7399) (Stainless steel outer wall required for installation in Canada.)
Clearances
2″ clearance to combustibles.
Shrouds
UL Listed with Duravent shroud specifications.
Diameters
5″- 8″
Instructions
- DuraTech® Adjustable Length Installation Instruction Supplement
- DuraTech® Instructions 5″-8″
- DuraTech® Shroud Instructions
- DuraTech® Universal Support Installation Instruction Supplement
- DuraTech®: New Chimney Cap Assembly L1510 Installation Instruction Addendum
Typical Installation
Refer to our Typical Installation drawings to select the appropriate component parts for your installation.
- DVL/DuraBlack Chimney Adapter must be used when connecting DVL pipe to a Ceiling Support Box or Finishing Collar. When connecting DuraBlack pipe, a DVL pipe to a Ceiling Adapter, DuraBlack Slip Connector, or Snap-Lock Adapter must be used.
- Wall Thimble must be installed with an appropriate length of chimney pipe for all horizontal through-the-wall installations. To accommodate thicker walls, the telescoping pieces of the Wall Thimble can be separated, and a field-fabricated extension may be installed.
- Attic Insulation Shield must be used in all installations that pass through an attic, regardless of whether the attic is insulated or not.
- Firestop Radiation Shield must be used when a chimney passes through a floor or ceiling without a support box.
More Typical Installations:
Installation Key
| 1 | DVL or DuraBlack |
| 2 | Celling Support |
| 3 | Wall Thimble |
| 4 | Chimney Pipe |
| 5 | Attic Insulation Shield |
| 6 | Fishing |
| 7 | Storm Collar |
| 8 | Chimney Cap |
| 9 | Elbow |
| 10 | Elbow Strap |
| 11 | Tee with Tee Cap |
| 12 | Tee Support |
| 13 | Chase Top Flashing |
| 14 | Base Tee/Double Tee |
| 15 | Anchor Plate or Anchor Plate with Damper |
| 16 | Roof Support |
| 17 | Finishing Collar |
| 18 | DVL Adapter, DuraBlack Slip Connector, or Snap-Lock Adapter |
| 19 | Stove Adapter |
Planning Your Installation
The following recommendations are general guideline to assist in the layout and selection of the chimney components needed for your installation. Always follow Duravent Installation instructions before installing your chimney system., found with the cap or support box.
-
- The diameter of the chimney should match the outlet size of the appliance. An improperly sized chimney results in poor draft and excessive creosote formation.
- Measure the diameter of the appliance flue outlet. Select the chimney and either DVL or DuraBlack connector stovepipe with the same size diameter as the appliance flue outlet. For fireplace installations, refer to the sizing chart in the back of this catalog.
- Determine if the installation is a through-the-roof installation or a through-the-wall installation. A through-the-wall installation will require additional components (Wall Thimble, Tee/ Cap, Tee Support, and Wall Straps).
- Install the chimney in the interior of the structure whenever possible. A cold exterior chimney will produce less draft and will generate more creosote.
- If possible avoid offsets that serve to restrict the natural draft. A straight vertical installation is more efficient and less likely to develop creosote. If an offset is required to avoid rafters or other obstructions, measure the horizontal distance required and the vertical height available. Both 15° and 30° elbows are available. Elbows have a 360° swivel base to allow orientation of elbow direction only. Elbows are fixed at 15° or 30°. Elbows greater than 30° are not allowed in the United States. A maximum of two offsets in a single installation are permitted. Refer to the offset table in the back section of this catalog. At least one Elbow Strap is required for each offset. Elbow Straps ensure adequate support.
- Determine the minimum chimney height above the roof line. Building codes require a minimum of 3′ above the roof penetration and at least 2′ higher than any portion of a building within 10′. See figure 1. The termination cap is installed above that point. If chimney extends 5′ or more above the roof penetration an extended roof bracket is required. An additional roof bracket is needed every 5′.
- Measure the roof pitch. For example a 6/12 pitch has a vertical rise of 6″ over a horizontal distance of 12″. Select the appropriate flashing.
- Determine the total length of chimney and stovepipe required for the installation. To calculate the installed per length of 5″-8″ DuraTech pipe, subtract 1 ¼” per joint. For 10″-24″ diameter, subtract ¾” per joint of pipe. Subtract 1 ¼” per joint of DuraBlack stovepipe. Subtract 1 ½” per joint of DVL stovepipe. Minimum chimney height, at sea level, of straight vertical chimney is 10′ to 15′ above the appliance outlet. Higher elevations, or the use of elbows or a tee, will require approximately 30% to 60% more height to provide for an adequate draft.
- For a UL approved shroud, see the DuraTech Shrouds Installation Instructions (L157). View online at www.duravent.com, under catalogs and instructions.
- Be fire safe. Maintain at least 2″ clearance to combustibles. Follow local building codes and have your chimney inspected by a certified professional.
Product Resources
Catalogs
Bulletins
- 2011 DuraTech® Finishing Collar w/Adapter Bulletin
- 2012 DuraTech® Finishing Collar with Mechanical Connection 2012 Bulletin
- 2012 DuraTech® for Oil Bulletin
- 2013 DuraTech® Snow Splitter Bulletin
- 2014 Black Paint Bulletin
- 2014 DuraTech® Adjustable Parts Bulletin
- 2014 DuraTech® Square Ceiling Support Box Bulletin
- 2014 DuraVent now offering DuraTech® Tee Cap Bulletin
- 2018 DuraTech® 5”-8” Square Ceiling Support Box w/ Collar Bulletin 01-14-18
- 2019-05-29 DuraTech® Insulated Wall Thimble Bulletin
- 2020-02-14 DuraPlus® & DuraTech® Support Boxes Bulletin
- 2024-02-02 NEW DuraTech® 5″ – 8″ US Products Bulletin
Brochures
Sales Sheets
- Dikapt Anti-Downdraft Cap
- DuraTech® Comparison
- DuraTech® Pass-Through Radiation Shield
- DuraTech® Support Boxes with Integrated Flue Extensions
- DuraTech® Universal Rubber Boot Flashing Kit
- Oil Sizing Chart
- Woodburning Best Practices
Educational Papers
Videos
DIKAPT Anti-Downdraft Cap Video
https://youtu.be/IXxA8B-PqSw?si=kXN0FjeC4oY-R-Z4
DuraTech® Flat Ceiling Support Boxes Video
https://youtu.be/f1xpwcCAMDs?si=u-wusdva-DoxRlSP
DuraTech® Spacer Tool for Locking Band Video
https://youtu.be/puLU2_ao95k?si=hYHvJGokFiq1dJPV
Introduction to DuraTech® Support Boxes Video
https://youtu.be/r07O0AfYbgQ?si=Wt3WPOnMSoY_KwXz
Tips and Tricks on How to Install and Clean Your Chimney’s Spark Arrestor Video
https://youtu.be/HB47-4kuoIE?si=M3TYRvR68TBXjhLb
DuraVent DoitYurtself Video
FAQ
What is in the DuraTech Elbow Kit, and how do I choose the angle and diameter?
You get two matching elbows and one Elbow Strap. On the page, pick the diameter (5 to 8 inches) first, then the outer-wall finish and angle: stainless (SS) in 15 or 30 degrees, or galvalume (GA) in 15 or 30 degrees for 6 to 8 inch sizes. The listed price is the 5-inch stainless 15-degree pair; the other combinations show their price on the selector.
When do I need an elbow kit on a DuraTech chimney?
Only when something is in the way: rafters, a ridgepole or joists. One elbow starts the offset and the second returns the chimney to vertical, which is why they come as a pair. DuraTech allows a maximum of two offsets (four elbows) in one installation, and the straighter the chimney the better the draft and the less creosote it collects.
Can I combine elbows to make a 45 or 90 degree offset?
No. UL 103 does not permit offsets greater than 30 degrees in the United States, and DuraTech elbows are fixed at 15 or 30 degrees. The 360-degree swivel at the base only lets you point the offset in any direction; it does not change the angle. Use the offset table in the DuraTech catalog to see how much horizontal distance each pair gives.
How is the offset supported?
Each offset needs at least one Elbow Strap, which is why one is in the kit. If the chimney run between the two elbows is longer than about 3 feet, add a second Elbow Strap around the middle of that section. Straps or a Tee Support carry the weight of the pipe above so the elbows are not loaded; secure straps to framing with the nails or wood screws the manual specifies.
Do elbows change how much chimney height I need?
Yes. DuraVent’s planning guide says an installation with elbows or a tee needs roughly 30 to 60 percent more height than a straight chimney to draft properly, on top of the normal 10 to 15 foot minimum above the appliance outlet. Elbows are joined with the same twist-lock as the pipe; screws are optional and must not penetrate the inner wall.
Will these elbows work with DuraPlus or DuraChimney pipe?
No. This kit fits 5 to 8 inch DuraTech only; DuraVent does not allow mixing DuraTech, DuraPlus and DuraChimney components. Choose stainless if the chimney is exposed outdoors or you want it to match stainless pipe, and note the stainless outer wall is required for installations in Canada. DuraTech keeps its 2-inch clearance to combustibles through the elbows.
Shipping / Freight / Return Info
Same-Day / 24 hour shipping
Same-Day/24 hour shipping - If we have the product in stock, we can ship same day if ordered before 12pm Monday - Friday (CST).Freight Claims Policy
- Open and inspect the order while the delivery driver is present. If delivery driver does not provide sufficient time to do so, please notate the delivery receipt.
- By signing the delivery receipt without noting any damage or missing items, you confirm that your order arrived complete and in excellent condition.
- Record any damage or missing pieces directly on the delivery receipt.
- Do not discard damaged item(s) or any original packaging. For severe damage, write “Refused due to damage” on the delivery receipt and contact us immediately.
- Report any damage within two business days, including delivery details and photos showing the issue
- Damaged item(s) must be returned within 30 days. Failure to return them will result in a charge to the original payment method.
Return Merchandise Authorization Policy
- Submit your return request within 30 days of delivery.
- You will receive an email within 1-2 business days confirming whether your return request has been approved or denied.
- Please also note that a 20% restocking fee may apply to approved returns
- If approved, you will receive an itemized Return Authorization, return shipping labels (if requested), and detailed instructions within 1–2 business days
- From the date this email is received, you will have 14 days to return the product.
- Once our distributor receives and inspects the returned item(s), your refund will be issued within 1–2 weeks
- Items returned outside of this process or time frame are not eligible for a refund.
Customer Reviews
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What Our Customers Say
D
A sauna turns your garden into a spa oasis. We debated it for a while, but after renovating our house, we pulled the trigger and bought a sauna from Norse Steam and Maya. She was always super responsive and helpful throughout the process. Don't kid yourself, getting a really nice sauna is not that easy. Sizing and heating need to be figured out, as does the building, but we have always had a helpful partner on our side. She never upsold us on anything we didn't need, and we got some nice freebies when the sauna was delivered. And now we can really enjoy every moment in our garden.
KF
I'm really happy with my sauna purchase. Maya gave above and beyond excellent customer service. She wasn't pushy and gave impressive followup after the delivery to make sure everything was just right.
DE
I enjoy my FD2 Sauna with Red Light, Infrared and radiant heat. Use it 5x a week and my post workout soreness is minimal and sleep great. Maya at Norse Steam was excellent to work with.
B
We purchased the 3-person sauna for our outdoor garden. We chose the cube sauna for the aesthetic and could not be happier.
I assembled by myself except for the 2 large panels (requires a few people). Instructions were good - took me two partial Saturdays to complete and a few hours to unpack and organize in advance of assembly. Had my elec. add a NEMA enclosure on the back for the controller and power for lights and a 2nd panel for the wireless control.
Customer service was excellent
MP
Awesome Sauna and Awesome Company and Experience purchasing it from Maya!
After much research I chose the Finnmark FD-2 and it has met and exceeded all my expectations! Easy to assemble and it functions great - just as advertised. I highly recommend it for home use!
EA
Recently purchased the Finnmark one person after much research. Extremely happy with it and the ordering process. Maya was very responsive and helpful during the process and keeping us updated while we waited for shipment. There were several places I could have ordered this, but i chose Norse Steam based on the communication and customer service which was fantastic. The shipment was also excellent. The setup was pretty seamless for two people - but the best part is the sauna experience 10/10
G
Maya is amazing - super helpful and responsive. Looked at many stores, these guys have the best prices and service. Highly recommend
GR
Norse Steam, and specifically Maya, were extremely helpful as I was making the decision for our Sauna. I was able to get all of the necessary details to make a decision as construction was happening in my backyard to make space for it.
We absolutely love the CL7G. It is extremely comfortable for 6 people (can fit more less comfortably). The Thermory Spruce and Aspen in the interior smells great. The lighting is lovely. We paired the CL7G with the Harvia Spirit 10.5kw.
RS
Had great experience shopping at Norse Steam for the new heater. They had very good deal, with rocks. Customer service was good, and responded very fast with my questions. Received the heater, and it looks good, and the quality seem to be great. Will install soon, and am very excited to start experiencing sauna the way it ment to be
O
positive purchase experience - Harvia Legend 150 SL woodstove
thanks Norse Steam for flawless transaction - I got instant replies on my questions, received competitive price on the wood stove and got it delivered within two weeks!
Can highly recommend Norse Steam for others.
JR
Smoking Hot Tub!
I got the Norse Steam SaunaLife wood-fired hot tub, the S4N model, and its been seriously great. It heats up quicker than I expected, usually around an hour and a half, and once its hot, it stays that way for a good long while. The wood-fired system is simple to use, and honestly kind of fun.
The tub itself feels solid and well put together. The thermo-spruce exterior looks beautiful in person, and the fiberglass interior is smooth, deep, and easy to clean. Its the kind of setup that just works without a bunch of fuss, which I really appreciate.
Also, the team at Norse Steam was genuinely great to work with. Super helpful, quick to respond, and made the process really easy from start to finish. It felt like they actually cared that I was happy with it. The tub has totally become a go-to way to unwind, and I wouldnt change a thing.
S
Maya was so knowledgeable and responsive
Maya was so knowledgeable and responsive. She helped me understand the product options and found a fantastic solution that fit our needs. Her follow through was very helpful and made us comfortable with our decision. We are extremely happy with the end result!
W
Great service
I recently purchased the Harvia Club sauna equipment, and I am thoroughly impressed with both the product and the customer service experience. The heaters robust performance and durable stainless steel construction make it ideal for larger sauna spaces, providing consistent heat and a relaxing environment. Its compatibility with advanced controls ensures a personalized sauna experience every time.
The customer service team was exceptional, prompt, knowledgeable, and helpful throughout the purchase process. They ensured smooth delivery and provided clear guidance on installation and operation. Overall, I highly recommend Harvia Club for anyone seeking premium-quality sauna equipment backed by excellent support!
BT
Great Sauna & Purchase Experience
Great experience purchasing Finnmark FD-2 from Norse Steam. Good communication and easy to assemble. Temperature increases quickly (30 minutes or less to 140) and maintains well. So far this has been a great purchase.
M
Great sauna and great customer service
We purchased the Finnmark SD-1 sauna. Maya was extremely helpful with the purchase. We had an issue with the sauna not reaching the maximum temperature, and Maya connected us with the appropriate technician that explained how to correct the issue. The sauna now heats to the maximum temperature (170 degrees) in less than an hour, and it is a great unit. We are very happy with it, and we would definitely purchase from NorseSteam if we needed any other items.
JK
Sauna Review
I recently purchased a sauna from Norse Steam, and I couldn't be more impressed with the entire experience. From start to finish, their customer service was exceptional, and Maya deserves special recognition for her outstanding support!
Maya was incredibly knowledgeable and patient, answering all my questions about the sauna features, installation process, and maintenance. She went above and beyond to ensure I selected the perfect model for my home. Even after the purchase, Maya followed up to make sure everything was running smoothly and that I was satisfied with my sauna.
The sauna itself is top-notch beautifully designed, durable, and easy to use. It's clear that Norse Steam takes pride in the quality of their products and their commitment to customer satisfaction.
If you're considering a sauna, I wholeheartedly recommend Norse Steam. With their excellent customer service and high-quality products, you're in great hands. Thank you, Maya, and the entire Norse Steam team for a fantastic experience!
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