The right double-wall pipe depends on where it goes: stove connector pipe and insulated Class-A chimney serve different parts of a venting system and are not automatically interchangeable. The AllFuel HST products below are insulated Class-A chimney sections, available in 6-inch and 8-inch diameters and 36-inch or 48-inch lengths. The DuraVent DVL is a 6-inch, 24-inch double-wall stovepipe. Choose by your appliance’s requirements, existing venting system, and installation instructions—not by length alone.
| Product | Best suited for | Size | Product type |
|---|---|---|---|
| AllFuel HST 6-inch by 36-inch | Buyers extending a compatible 6-inch HST chimney system | 6 inches by 36 inches | Insulated Class-A chimney |
| AllFuel HST 6-inch by 48-inch | Buyers needing a longer compatible 6-inch chimney section | 6 inches by 48 inches | Insulated Class-A chimney |
| AllFuel HST 8-inch by 36-inch | Buyers extending a compatible 8-inch HST chimney system | 8 inches by 36 inches | Insulated Class-A chimney |
| AllFuel HST 8-inch by 48-inch | Buyers needing a longer compatible 8-inch chimney section | 8 inches by 48 inches | Insulated Class-A chimney |
| DuraVent DVL, 6-inch by 24-inch | Buyers seeking a double-wall stovepipe section | 6 inches by 24 inches | Double-wall stovepipe |
AllFuel HST 6-Inch by 36-Inch Chimney Pipe
Best for: Buyers adding a 36-inch section to an existing AllFuel HST 6-inch Class-A chimney system. This product is insulated chimney pipe, not a generic stove connector section.
The listed features specify 304 stainless steel for both inner and outer walls, with laser-welded seams. A ceramic-fiber blanket provides the insulation, and the manufacturer’s stated clearance to combustibles is 2 inches. The insulation is described as helping maintain higher internal flue temperatures for draft.
Why it was selected: It is a clearly specified option for a 6-inch HST system when a 36-inch section fits the planned chimney layout. Its stated materials and insulation details help buyers distinguish it from uninsulated connector pipe.
Limitation: The listing says this pipe cannot connect to other brands of Class-A chimney. Confirm system compatibility and required clearances before purchase.
AllFuel HST 6-Inch by 48-Inch Chimney Pipe
Best for: Buyers with a compatible AllFuel HST 6-inch chimney who need a longer section than the 36-inch option.
This Class-A chimney pipe has 304 stainless steel inner and outer walls, laser-welded seams, and ceramic-fiber insulation. Its listed clearance to combustibles is 2 inches. The product description says the insulation helps keep flue temperatures high to support draft.
Why it was selected: It provides the same stated material and insulation characteristics as the 6-inch by 36-inch model in a longer section. Choose this length if it suits the approved system layout and reduces the need for a different section length.
Limitation: A longer pipe is not automatically the right choice for every installation. The listing restricts compatibility to AllFuel HST Class-A chimney pipe and says it cannot connect to other brands.
AllFuel HST 8-Inch by 36-Inch Chimney Pipe
Best for: Buyers whose appliance and existing AllFuel HST chimney system call for an 8-inch diameter and a 36-inch section.
The pipe is described as an insulated Class-A chimney section with 304 stainless steel inner and outer walls. Its seams are laser welded, and ceramic-fiber insulation is listed as providing a 2-inch clearance to combustibles while helping maintain internal flue temperature.
Why it was selected: It gives buyers with an 8-inch HST system a shorter of the two listed section lengths. Its diameter and length make it straightforward to compare with the 8-inch by 48-inch alternative.
Limitation: Diameter must match the appliance and approved venting design. This product is specified for AllFuel HST Class-A chimney and cannot be connected to other brands of Class-A chimney.
AllFuel HST 8-Inch by 48-Inch Chimney Pipe
Best for: Buyers extending a compatible 8-inch AllFuel HST Class-A system who need a 48-inch section.
Like the other AllFuel HST options here, this section lists 304 stainless steel for both walls, laser-welded seams, and a ceramic-fiber insulation blanket. The stated clearance to combustibles is 2 inches. The listing describes the insulation as supporting high internal flue temperatures and draft.
Why it was selected: It is the longer 8-inch option in the supplied product list, making it useful to compare with the 36-inch section when planning a system using compatible parts.
Limitation: The longer length may not suit every layout, and the product is not listed as universal. Do not assume it connects to another manufacturer’s Class-A chimney.
DuraVent DVL 6-Inch by 24-Inch Stovepipe
Best for: Buyers looking for a 6-inch, 24-inch double-wall stovepipe section rather than an insulated Class-A chimney section.
The listing describes DVL as double-wall stovepipe designed to maintain higher flue-gas temperatures for a steady draft. It states that the pipe vents exhaust from wood, oil, coal, and gas fuels. The listed product length is 24 inches, and the description emphasizes a snug fit for installation.
Why it was selected: It is the only supplied product identified as stovepipe, so it is the closest match for someone searching specifically for double-wall stove connector pipe.
Limitation: The product information does not establish that it is stainless steel or specify compatibility with a particular appliance or chimney system. Verify those details in the manufacturer’s documentation before selecting it.
Buying Guide: How to Choose Double-Wall Pipe
Do you need stovepipe or Class-A chimney?
Start by identifying the section of the venting system you are buying. Stovepipe, often called connector pipe, connects a stove to the chimney system. Class-A chimney is an insulated chimney product used as part of the chimney route. These products have different roles and installation requirements, so a double-wall label alone does not make them interchangeable.
In this selection, the DuraVent DVL is described as stovepipe. The four AllFuel HST products are described as insulated Class-A chimney pipe. If you are replacing a section, match the product type and system specified by the appliance and venting manufacturers.
Which diameter should you choose?
Choose the diameter required by the appliance and the approved venting plan. The products listed here are 6-inch or 8-inch options. Do not select a diameter simply because it appears to fit an existing opening; an appliance’s required vent size and system design should guide the choice.
For a 6-inch AllFuel HST system, compare the 6-inch sections. For an 8-inch AllFuel HST system, compare the 8-inch sections. The DuraVent product is listed as 6 inches in diameter. Confirm actual system compatibility rather than mixing products based on matching diameter alone.
Should you choose a 36-inch or 48-inch section?
Compare the listed section length with the route and parts required by the chimney design. The AllFuel HST range includes both 36-inch and 48-inch options at each listed diameter. A 48-inch section is longer, but the correct choice depends on the planned installation and system instructions.
Measure and plan the vent route before ordering. Account for the other components required by the system, and do not assume a longer section will eliminate the need for specific supports, transitions, or other parts. Use the manufacturer’s installation instructions to determine the complete configuration.
Why do material and insulation details matter?
The AllFuel HST listings specify 304 stainless steel inner and outer walls, laser-welded seams, and ceramic-fiber insulation. They also state a 2-inch clearance to combustibles. These are useful comparison points when evaluating the listed Class-A options, but they do not replace the product instructions or local requirements.
The DuraVent listing highlights double-wall construction and maintaining higher flue-gas temperatures, but the supplied information does not specify stainless steel construction. If stainless steel is a firm requirement, verify the exact model’s material details before purchasing rather than inferring them from the phrase “double-wall.”
Can you connect different brands?
Do not assume that two chimney sections are compatible because their diameters match. The AllFuel HST listings explicitly state that they are compatible with AllFuel HST Class-A double-wall chimney pipe and cannot be connected to other brands of Class-A chimney. That restriction is a key reason to keep a chimney system within its specified product family.
For the DuraVent DVL, check the manufacturer’s documentation for approved connections and system components. The product details provided here do not establish cross-brand compatibility. When replacing or extending an existing system, identify its brand and product type first.
What should you verify before ordering?
- Confirm whether you need connector stovepipe or insulated Class-A chimney.
- Check the appliance instructions for the required vent diameter and approved configuration.
- Match the pipe to the existing system’s brand and product family.
- Verify the length, clearance requirements, and connection details in the manufacturer’s documentation.
- Check local building and fire-safety requirements and use a qualified installer when needed.
Frequently Asked Questions
Is double-wall stovepipe the same as double-wall chimney pipe?
No. Stovepipe is connector pipe, while Class-A chimney is a separate insulated chimney product. They serve different roles and should be selected and installed according to their respective system instructions.
Which product in this list is stainless steel stovepipe?
The supplied details identify the AllFuel HST sections as 304 stainless steel Class-A chimney pipe. The DuraVent DVL is identified as double-wall stovepipe, but its supplied description does not specify stainless steel construction.
Can AllFuel HST chimney pipe connect to another brand?
The listed AllFuel HST products state that they cannot connect to other brands of Class-A chimney. Check the manufacturer’s system requirements before combining components.
What is the difference between the 36-inch and 48-inch options?
The listed sections differ in length. Both lengths are offered in 6-inch and 8-inch diameters, with the same stated AllFuel HST material and insulation details. Choose the length that suits the approved chimney layout.
Does the AllFuel HST product listing specify clearance?
Yes. The listings state that the ceramic-fiber insulation provides a 2-inch clearance to combustibles. Follow the product instructions and applicable local requirements for the actual installation.
Can I choose a pipe based only on its diameter?
No. Diameter is only one selection factor. You also need the correct product type, system compatibility, length, and appliance-approved configuration.