A through-the-wall chimney kit helps connect a wood stove to an outdoor chimney when a ceiling exit is not practical. The right choice depends on your stove’s required flue diameter, the chimney brand, wall thickness, and how much chimney pipe the kit actually includes. These five options range from a more complete 6-inch DuraVent kit to AllFuel HST kits in 6- and 8-inch sizes. One product is a stovepipe connector kit rather than a complete wall-pass-through kit, so check the differences before you buy.
Important: A wood-stove chimney is a safety-critical installation. Follow the stove and chimney manufacturers’ instructions, local building and fire codes, and required clearances. Confirm compatibility before mixing chimney components; have a qualified professional assess the installation if you are unsure.
Table of Contents
Quick Comparison
| Product | Diameter | What to Know | Best For |
|---|---|---|---|
| DuraVent DuraPlus Through-The-Wall Chimney Kit | 6 inches | Includes a thimble, tee, support, straps, cap, and short horizontal pipe; chimney pipe is not included | A 6-inch DuraPlus wall exit |
| DuraVent DVL Close Clearance Connector Kit | 6 inches | Double-wall stovepipe connector kit, not a complete through-wall chimney kit | A compatible connector-pipe setup |
| AllFuel HST 6-Inch Through-The-Wall Kit | 6 inches | Made for AllFuel HST Class-A chimney; verify pipe and configuration needs | A 6-inch AllFuel HST system |
| AllFuel HST 8-Inch Through-The-Wall Kit | 8 inches | For AllFuel HST Class-A chimney; listing configuration details should be checked | An 8-inch AllFuel HST system |
| AllFuel HST 8-Inch Kit with Adjustable Bracket | 8 inches | Lists an 18-inch pipe length and adjustable wall bracket | An 8-inch run that needs bracket adjustment |
Our Picks: Best Wood Burning Stove Flue Through Wall Kit reviews
1. DuraVent DuraPlus Through-The-Wall Chimney Kit: Best Complete Starting Set
This 6-inch kit is the most straightforward starting point in this group for a DuraPlus through-the-wall chimney layout. It includes a wall thimble, a 9-inch horizontal chimney-pipe section, a tee with a clean-out cap, a tee support, two wall straps, and a chimney cap. That bundle covers several key parts of the wall exit and outdoor support arrangement.
The kit uses DuraPlus triple-wall chimney components and a twist-lock connection. Its listed support capacity is up to 40 feet of chimney pipe, but that pipe is not included. You will need to plan and buy the compatible chimney sections needed to reach the required termination height. The listed 6-inch size also means you should confirm that it matches your stove’s flue requirements and the rest of your chimney system.
Compared with the AllFuel HST options, this kit has a clearly listed set of included parts and is designed for DuraPlus pipe. It is not a universal set for mixing with other brands. Its weight and number of components also make it a substantial installation project, rather than a simple connector replacement.
Pros:
- Includes a wall thimble, tee, clean-out cap, support, straps, and chimney cap
- Uses a twist-lock design and triple-wall chimney construction
- Specifies support for up to 40 feet of chimney pipe
- Provides a clear 6-inch system size
Cons:
- Chimney pipe beyond the short horizontal section is not included
- Designed for DuraPlus components, so compatibility must be checked carefully
Verdict: Choose this kit if you need a 6-inch DuraPlus wall-exit package and are prepared to source the remaining chimney pipe separately.
2. DuraVent DVL Connector Kit: For the Stovepipe Connection, Not the Whole Wall Exit
This 6-inch DuraVent DVL kit is a double-wall stovepipe connector kit intended for close-clearance connector use. That makes it a different kind of product from the other options here: it is not described as a complete Class-A chimney wall-pass-through kit, and the supplied product details do not list a wall thimble, tee, outdoor support, or chimney cap.
It may be relevant when you are planning the connector section between a compatible stove and a separate chimney system. But connector pipe and chimney pipe serve different parts of an installation, so do not treat this kit as a substitute for the required insulated chimney components through and outside the wall. Check the appliance manual and DuraVent’s instructions to confirm where this product belongs in your specific setup.
Compared with the DuraPlus kit, the DVL option has a narrower role: it is focused on the connector portion rather than supplying the main wall-exit hardware. That can make it useful for a targeted component need, but shoppers looking for an all-in-one wall kit should look elsewhere.
Pros:
- 6-inch size for a compatible flue setup
- Double-wall stovepipe connector design
- Described as a close-clearance connector kit
Cons:
- Not presented as a complete through-the-wall chimney kit
- The supplied details do not specify the individual parts included
Verdict: Consider the DVL kit only if you need a compatible connector-pipe kit; choose a dedicated chimney kit for the wall penetration and outdoor chimney run.
3. AllFuel HST 6-Inch Kit: A Brand-Specific Option with Spark Guard Cap
This AllFuel HST kit is built around a 6-inch Class-A double-wall chimney system made from 304 stainless steel. The listed components include a tee and cap, base wall support, stove-pipe adapter, wall thimble, chimney cap with spark guard, a selected wall bracket, and a selected length of pipe. The product information also says additional individual AllFuel HST chimney lengths may be needed to complete the installation.
Brand compatibility is the main point to keep in mind: the listing says this kit works with AllFuel HST Class-A chimney and cannot connect to other brands of Class-A chimney. It also describes two bracket choices: a standard bracket with 2-inch clearance or an adjustable bracket that extends up to 7 inches. The stated pipe-length guidance depends on wall thickness and whether the outside section is exposed or enclosed in a chase, so measure before selecting parts.
Compared with the DuraVent kit, this option specifies a spark guard and a 304 stainless-steel Class-A system, but it requires a closer check of selected pipe and bracket options. The listing says the system is certified to UL 103HT, a detail worth confirming against your appliance and local requirements.
Pros:
- 6-inch Class-A double-wall design in 304 stainless steel
- Includes a tee, base support, thimble, adapter, and spark-guard cap
- Offers standard or adjustable wall-bracket choices
- Listed as certified to UL 103HT
Cons:
- Compatible only with AllFuel HST Class-A chimney pipe
- Additional chimney lengths may be needed to complete the run
Verdict: This is a good fit to investigate for a 6-inch AllFuel HST system, provided you verify the selected components and calculate the complete chimney run first.
4. AllFuel HST 8-Inch Kit: For Larger Compatible Flue Systems
This 8-inch version uses the same AllFuel HST Class-A double-wall system concept as the 6-inch kit, with a tee and cap, base wall support, stove-pipe adapter, wall thimble, spark-guard cap, and a selected wall bracket and pipe configuration. Its larger diameter makes it relevant only when the stove and chimney plan call for an 8-inch system; a bigger flue is not automatically a better choice.
The kit is specific to AllFuel HST chimney pipe and should not be mixed with another brand’s Class-A chimney. The listing explains that pipe length should be selected based on wall thickness and whether the exterior pipe will be exposed or enclosed. It also says a wall bracket is needed for every 8 feet of vertical rise above the base wall support, with extra brackets purchased separately if required.
The product title and supplied details do not identify a specific included pipe length or bracket configuration for this listing. Compare that information with the more clearly specified 18-inch adjustable-bracket option below before ordering. That extra verification matters when you need to plan the complete chimney run and support locations.
Pros:
- 8-inch size for an appliance and system that require that diameter
- Includes key wall-pass-through and support components
- Has a spark-guard chimney cap
- Listed as certified to UL 103HT
Cons:
- Compatible only with AllFuel HST Class-A chimney pipe
- Confirm the exact pipe length and bracket selection before purchase
Verdict: Choose this 8-inch option only when your stove’s specifications call for an 8-inch flue, and verify the selected configuration and additional pipe needs before checkout.
5. AllFuel HST 8-Inch Kit with Adjustable Bracket: A More Specific Configuration
This AllFuel HST 8-inch option is listed with an 18-inch pipe length and an adjustable wall bracket. Like the other HST kit, it is designed for AllFuel HST Class-A double-wall chimney pipe and includes a tee with cap, base wall support, stove-pipe adapter, wall thimble, and spark-guard cap. The supplied information says separate chimney lengths may still be needed to complete the installation.
The adjustable bracket can extend up to 7 inches, which may help when the chimney needs to clear a gutter or small overhang. The listing calls for a wall bracket for every 8 feet of vertical rise above the base support; any extra brackets are separate purchases. Measure the wall and the planned outdoor route carefully so you can confirm that the listed pipe section and bracket arrangement work for your layout.
Compared with the other 8-inch listing, this one gives a specific pipe length and bracket type, making its configuration easier to identify from the supplied details. It still has the same brand-compatibility limit and should only be considered when an 8-inch flue is correct for the appliance.
Pros:
- Lists an 18-inch pipe length and adjustable wall bracket
- Bracket adjusts up to 7 inches for clearance around a small overhang or gutter
- Includes a tee, support, thimble, adapter, and spark-guard cap
- Listed as certified to UL 103HT
Cons:
- For AllFuel HST Class-A chimney only
- Additional chimney lengths and support brackets may be needed
Verdict: This is the more clearly specified 8-inch choice when an adjustable bracket and the listed 18-inch pipe section suit your installation plan.
How to Choose a Wood Stove Flue Through-Wall Kit
Match the Flue Diameter to Your Stove
Start with the stove manufacturer’s required flue size. The products here are offered in 6-inch and 8-inch configurations, but you should not choose based on convenience or appearance. Confirm the diameter in your stove manual and make sure the connector, wall thimble, chimney pipe, tee, and cap are intended to work together as one system.
Know the Difference Between Connector Pipe and Chimney Pipe
Stovepipe is generally the connector section between the stove and the chimney system; insulated Class-A chimney is used for the chimney route through the wall and outdoors. A connector kit, such as the DuraVent DVL option here, is not the same as a complete through-wall chimney package. Check each product’s intended use and installation instructions rather than assuming similar-looking parts are interchangeable.
Check Brand Compatibility
Chimney components are not automatically compatible across brands. The AllFuel HST listings specifically say they cannot connect to other brands of Class-A chimney. The DuraPlus kit is also intended for its matching DuraPlus chimney system. Confirm that every section and fitting belongs to the system specified by the manufacturer.
Calculate the Parts and Pipe You Still Need
A kit may include the wall thimble, tee, support, and cap without supplying all the pipe needed for the complete vertical run. Check the included-parts list and estimate the full route from the wall to the chimney termination. The DuraVent kit, for example, lists a short horizontal section but says the chimney pipe is not included. AllFuel HST listings also note that additional chimney lengths may be required.
Measure the Wall and Exterior Clearance
Measure the wall thickness where the chimney passes through, then check the manufacturer’s instructions for the required pipe length through that opening. For the AllFuel HST kits, the supplied guidance says to add at least 5 inches if the pipe will be exposed outside, or 8 inches if it will be enclosed in a chase. Also consider nearby gutters, overhangs, and other obstructions when choosing a standard or adjustable bracket.
Plan Supports and the Outdoor Route
Map the chimney’s vertical rise and support points before ordering. The AllFuel HST information calls for a wall bracket for every 8 feet of vertical rise above the base wall support, with additional brackets available separately if needed. The DuraVent kit lists two wall straps. Follow the specific system instructions for support spacing and placement rather than relying on a general estimate.
Confirm Certification, Clearances, and Local Rules
Look for the chimney system’s stated certification and verify it is appropriate for your appliance and installation. The AllFuel HST kits are listed as certified to UL 103HT. Certification alone does not replace correct installation: wall construction, required clearances, chimney height, and termination location still matter. Check local code and consult a qualified installer or building official when needed.
Frequently Asked Questions
Can I use a stovepipe connector kit as my through-wall chimney kit?
No. A connector kit and a through-wall chimney kit serve different roles. The DuraVent DVL product is described as a double-wall stovepipe connector kit, while a wall exit typically requires compatible chimney components such as a wall thimble, tee, support, and outdoor chimney pipe. Follow the product and stove instructions for the complete system.
Does the DuraVent DuraPlus kit include all the chimney pipe I need?
No. It includes a 9-inch horizontal chimney-pipe section along with several wall-exit components, but the listing says the chimney pipe is not included. Work out the full run and order compatible DuraPlus pipe separately.
Can I combine AllFuel HST pipe with another brand’s Class-A chimney?
The AllFuel HST product information says its kits cannot connect to other brands of Class-A chimney. Use the manufacturer’s specified components and confirm compatibility for every section and fitting.
How do I decide between a 6-inch and an 8-inch kit?
Use the flue diameter required by your wood stove, as stated in its manual. Do not select a larger or smaller size without the manufacturer’s approval. The kit diameter must match the intended chimney system and appliance requirements.
Do these kits include enough pipe to reach above the roofline?
Not necessarily. The DuraVent listing says chimney pipe is not included beyond its short horizontal section. The AllFuel HST listings say additional lengths may be needed. Calculate the full route and check the product’s selected pipe configuration before ordering.
What is the benefit of an adjustable wall bracket?
An adjustable bracket can provide extra offset from the wall. The AllFuel HST listings say the adjustable version extends up to 7 inches and may help clear a gutter or small overhang. Measure the obstruction and confirm the bracket’s installation requirements before choosing it.
Can I install a through-wall chimney kit myself?
Installation depends on the building, stove, chimney system, and local rules. Because incorrect clearances or incompatible parts can create a fire risk, follow the manufacturer’s instructions and local code. If you are uncertain about the wall opening, supports, clearances, or chimney route, use a qualified professional.
Conclusion
For a 6-inch DuraPlus installation, the DuraVent Through-The-Wall Chimney Kit is the clearest all-around starting point in this group because its listed components cover many parts of the wall exit, though you must buy the remaining chimney pipe. For an AllFuel HST system, choose the 6-inch or 8-inch kit that matches your stove and verify the selected pipe and bracket configuration. The DuraVent DVL kit is for the connector-pipe portion, not a stand-alone wall-pass-through system. Whatever you choose, confirm compatibility, clearances, and local requirements before installation.
