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DuraVent DirectVent Pro 8×11 Kit Builder: choose a complete wall or roof vent run
The DuraVent DirectVent Pro 8×11 Kit Builder is our page for putting together a fireplace vent run. DuraVent doesn’t sell a packaged kit for this size. DirectVent Pro 8×11 is DuraVent’s large size pipe inside a pipe vent for big direct vent gas fireplaces, with an 8 inch exhaust pipe inside an 11 inch air pipe. First, choose a required pipe length: 12, 18, 24, 36, or 48 inches. Then tick the parts your fireplace needs. All additions are optional on the page, and the price reflects your picks.
A wall exit uses pipe, a 90 degree elbow, a wall thimble that surrounds the wall opening, and an outside wall cap. A roof exit uses pipe, a support plate, a firestop at each ceiling opening, an attic insulation shield, roof flashing and a storm collar to keep rain out, and a roof cap. Your fireplace maker determines the parts needed. Pipe ends lock with a turn, without gaskets or sealant unless the fireplace maker specifies them. Allow for 1 5/8 inches lost at each joint. Just need straight pipe? See the DuraVent DirectVent Pro 8×11 Pipe Length. The DuraVent DirectVent Pro 8×11 Kit Builder ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 811DVP-18
Applications:
DirectVent Pro 8×11 is a coaxial venting system designed for use with direct vent gas appliances.
Materials and Construction
Vertical and horizontal terminations are constructed of stainless steel. Outer pipe brings combustion air to the appliance and the inner pipe exhausts flue gases to the outside. Gaskets or sealants are not required (unless specified by the appliance manufacturer).
Key Features:
– Twist-Lock Connections for Easy Installation
– Laser-Welded Seams
– Durable 0.016″ 430 Stainless Steel Inner Pipe
– Strong 0.018″ Galvalume Outer Wall
– Swivel Collar Elbows for Flexible Configuration
Listings:
DirectVent Pro 8×11 has been UL tested and listed to UL 2112 for use with ANSI Z21/CSA direct vent gas appliances certified by a major testing agency, such as UL, CSA, OMNI, Warnock Hersey (Intertek). Check with the appliance manufacturer for approval.
Product Resources
Catalogs
Sales Sheets
Component Parts
Vertical Termination Cap
Provides improved performance in high wind conditions. For vertical terminations only. Stainless steel construction.
Horizontal Termination Cap
Use for standard and high-wind through-the-wall applications. Check the appliance manufacturer’s installation instructions for minimum distance from windows and doors, and any other restrictions. Stainless Steel exterior construction. 2-piece adjustable design allows for up to 5-1/2” of adjustment.
Adjustable Pipe
Use when an exact length must be met between elbow offset or elsewhere. The Adjustable Length is a 2 piece design with an adjustability of 7” (15” to 22”).
45° Elbow
Use to offset around obstructions as needed. Fully unitized, twist-lock construction. Elbow has a swivel base, allowing the lock to remain fully engaged while aligning to the desired direction. The angle will remain fixed at 45°.
90° Elbow
Use to offset around obstructions as needed. Fully unitized, twist-lock construction. Elbows swivel, allowing the lock to remain fully engaged while aligning to the desired direction. The angle will remain fixed at 90°.
Pipe Length
Available in 12", 18", 24", 36", and 48" lengths. Designed for appliances tested and approved for DirectVent Pro 8x11. The 8x11 features a fully unitized twist-lock construction. Use of sealant is optional, unless specified by the appliance manufacturer. To calculate installed length, subtract 1 5⁄8” for each joint.
Adjustable Attic Insulation Shield
Required for installations that pass through an attic to prevent insulation and debris from accumulating near the vent. Includes base with overlapping shields and collar.
Wall Thimble
Provides a complete wall-pass through and firestop when used with the Horizontal Cap. Accommodates a wall thickness of 5-1/2” to 10-1/2”. Provides a 3” clearance at the top and 2” clearance at the bottom and sides. Check with the appliance manufacturer’s installation instructions and local codes for requirements. 811DVP-WT
FAQ
How does the DirectVent Pro 8×11 Customize your Kit page work?
Start with a pipe length, 12 to 48 inches, which is the required first row, then tick the parts you need from the Build your Kit row: adjustable pipe, 45 and 90 degree elbows and elbow strap, wall thimble, firestops, vinyl siding standoff, support plate, attic insulation shield, wall strap, the three flashings, storm collar and the horizontal or vertical termination cap. Each line shows its price.
What is DirectVent Pro 8×11 for?
It is DuraVent’s large coaxial vent for gas-fired direct vent fireplaces in luxury homes and commercial spaces such as hotel lobbies and restaurants, with an 8-inch exhaust inside an 11-inch air pipe. It is UL listed to UL 2112 for use with ANSI Z21 / CSA certified direct vent gas appliances; the fireplace manual must list it as approved.
Does the vent need sealant or screws?
No sealant or gaskets unless the appliance manufacturer specifies them. Sections twist-lock, the seams are laser-welded, the design is hem-free and the elbows have swivel collars so an offset can point in any direction. The inner pipe is 0.016-inch 430 stainless steel and the outer wall 0.018-inch galvalume; terminations are stainless steel.
Which flashing should I choose?
Adjustable Roof Flashing 0/12 to 6/12 for shallow roofs, 7/12 to 12/12 for steep ones, or the Flat Roof Flashing, always with the Storm Collar. For a wall exit use the Wall Thimble, the horizontal firestop and, on vinyl or irregular siding, the stainless Vinyl Siding Standoff so the horizontal cap does not sit against the siding.
What clearance and support does the vent need?
Clearance to combustibles is specified by the fireplace manufacturer, as with all direct vent systems; use the vertical firestop at each ceiling, the adjustable attic insulation shield in an attic, the support plate to carry a vertical run and wall straps on long runs, with the elbow strap at every offset. Follow local codes and the fireplace manual for termination distances.
Can I mix this system with the smaller direct vent lines?
No. The 8×11 line is its own system for large fireplaces; 4 x 6-5/8 and 5 x 8 DirectVent Pro parts do not fit it. Everything in the DirectVent Pro 8×11 category is built to this size, including the stainless horizontal and vertical termination caps at the bottom of the parts row.
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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