The right pot belly stove pipe adapter depends on the stove outlet shape and the flue pipe diameter your setup requires. For an oval stove collar leading to 6-inch round pipe, the LLPParts and Fardtry adapters are the most direct matches, but their oval dimensions differ. DuraVent is better suited to a 6-inch round appliance collar and DuraBlack stovepipe. The Moxweyeni reducers are for changing pipe diameter, not converting an oval outlet. Measure the collar and verify the stove maker’s venting requirements before choosing.
| Product | Best For | Connection Type |
|---|---|---|
| LLPParts Oval-To-Round Adapter | Oval outlet with the listed dimensions | Oval to 6-inch round |
| Fardtry Oval-to-Round Adapter | Oval outlet matching its measurements | Oval to 6-inch round |
| DuraVent DuraBlack Stovetop Adapter | Round collar and DuraBlack pipe connection | 6-inch round |
| Moxweyeni 6-to-4-Inch Reducer | A setup requiring a 6-to-4-inch transition | 6-inch to 4-inch duct |
| Moxweyeni 7-to-6-Inch Reducer | A setup requiring a 7-to-6-inch transition | 7-inch to 6-inch duct |
LLPParts 6-Inch Oval-To-Round Adapter

This adapter is designed for a wood stove with an oval flue collar that needs to connect to 6-inch round pipe. Its oval end is crimped to fit inside the stove’s oval outlet. The listed oval dimensions are 7-1/2 by 3-1/2 inches, and the overall height is 9-1/4 inches. The round end measures 6-1/8 inches and accepts crimped 6-inch pipe.
Best for: Buyers whose stove outlet matches the listed oval measurements and who need a transition to 6-inch round pipe. It was selected because it directly addresses the common oval-to-round connection required by some pot belly and other wood stoves.
Check before buying: The measurements are specific; do not assume this fits every oval collar. The listing identifies 24-gauge black construction and a one-year warranty. Confirm actual collar dimensions and the required pipe arrangement before ordering.
Fardtry Oval-To-6-Inch Round Adapter

Fardtry describes this connector as a transition from an oval wood stove outlet to 6-inch single-wall stovepipe. Its oval side measures 6.5 by 5.43 inches at the maximum length and width, while the round end is 6 inches in diameter. The listing specifies stainless steel and welded seams, with a black-coated finish described in the product name.
Best for: Buyers who need an oval-to-6-inch-round connection and whose measured stove outlet matches this adapter’s dimensions. It is a useful alternative to the LLPParts model because its stated oval measurements are different, making measurement comparison especially important.
Check before buying: Do not choose between oval adapters by appearance alone. Their listed oval dimensions differ substantially. Measure the outlet and verify how the adapter is intended to seat before purchase; the product description does not establish fit for every pot belly stove.
DuraVent DuraBlack 6-Inch Stovetop Adapter

This DuraVent adapter is intended to connect DuraBlack single-wall stovepipe to a wood-burning appliance’s flue collar. It has a stated 6-inch inner diameter, heavy-duty 24-gauge steel construction, welded seams, and a high-temperature painted black exterior finish.
Best for: Buyers with a 6-inch round collar who are connecting to DuraBlack single-wall stovepipe. It was selected as a round-collar option, not as an oval-to-round adapter.
Check before buying: This product description does not list an oval inlet or a method for converting an oval pot belly stove outlet. Avoid it if your stove requires an oval transition unless a separate, appropriate fitting is specified for your system. Confirm the pipe type and collar dimensions before ordering.
Moxweyeni 6-To-4-Inch Stove Pipe Reducer

This black matte reducer changes a 6-inch duct connection to a 4-inch duct connection. The listing says the 6-inch side fits into 6-inch flexible duct and has no crimp, while the 4-inch collar is crimped. It is described as a powder-coated steel fitting with a collar design intended to simplify connection.
Best for: Buyers whose existing venting layout specifically calls for a 6-to-4-inch size transition. It is included as a diameter-changing fitting, not as a direct oval collar adapter.
Check before buying: The product information does not say that it converts an oval stove outlet to round pipe. Do not treat a smaller pipe diameter as an acceptable substitute for the stove maker’s specified flue size. Confirm that this reducer is appropriate for the appliance and venting arrangement.
Moxweyeni 7-To-6-Inch Stove Pipe Reducer

This fitting transitions between 7-inch and 6-inch ducting. According to its listing, the 7-inch side fits into 7-inch flexible duct without a crimp, and the 6-inch collar is crimped. It has a black matte finish and is described as a powder-coated steel stove-pipe fitting.
Best for: Buyers who have measured a 7-inch-to-6-inch transition requirement in their existing layout. It can be considered when matching duct diameters is the goal, but it is not an oval-to-round adapter.
Check before buying: The listed sizes do not match a 6-inch oval-to-round connection by themselves. Verify the appliance’s required flue diameter and the fit direction at both ends before selecting a reducer.
Buying Guide: How to Choose a Pot Belly Stove Pipe Adapter
Does the stove have an oval or round outlet?
Start by identifying the shape of the stove’s flue collar. An oval-to-round adapter is designed to transition from an oval outlet to round pipe. A round stovetop adapter or diameter reducer serves a different purpose. Product names can use similar terms, so confirm the connection shape in the specifications rather than relying on the word “adapter.”
Which measurements should you take?
Measure the outlet at its widest and narrowest points if it is oval, and measure its diameter if it is round. Compare those figures with the adapter’s stated dimensions. Also confirm the round pipe’s nominal diameter and how each end is designed to fit. Listings may describe one end as crimped, uncrimped, or sized to accept another crimped pipe.
- Record the stove collar’s shape and measurements.
- Check the adapter’s inlet and outlet dimensions separately.
- Confirm the required pipe diameter from the stove documentation.
- Check whether the adapter fits inside a collar or accepts another pipe section.
Should you choose an oval adapter or a reducer?
Choose an oval-to-round model when the stove outlet itself is oval and the next section is round pipe. Choose a reducer only when a change in round pipe diameter is required and permitted for the appliance. A 6-to-4-inch reducer does not solve an oval-collar mismatch, and a 7-to-6-inch reducer does not automatically provide an oval transition.
How should you compare the two oval-to-round options?
Compare the oval measurements first. The LLPParts listing gives a 7-1/2-by-3-1/2-inch oval side, while Fardtry lists 6.5 by 5.43 inches at maximum length and width. Those dimensions are not interchangeable. The round ends are both described for 6-inch pipe, but verify the connection details and fit direction for the specific setup.
Does material or finish decide the fit?
Material and finish matter, but they do not establish that an adapter fits a particular stove. The supplied product details describe the LLPParts model as 24-gauge black metal, Fardtry as stainless steel with welded seams, DuraVent as 24-gauge steel with welded seams and a black finish, and the Moxweyeni reducers as powder-coated steel. Use dimensions and approved venting requirements as the primary selection criteria.
What should you verify for safe installation?
Follow the stove manufacturer’s instructions and the requirements for the specific venting system. Do not assume that a fitting is suitable solely because its diameter appears close. Check connection orientation, required pipe type, clearances, and any installation rules that apply to the appliance. If the correct configuration is unclear, consult a qualified wood-stove or chimney professional before operating the stove.
Frequently Asked Questions
What does a pot belly stove pipe adapter do?
It connects the stove’s flue collar to the next section of vent pipe. Depending on the model, it may change the connection shape, such as oval to round, or change the pipe diameter.
Can I use a 6-inch adapter on any pot belly stove?
No. A 6-inch round end does not guarantee that the adapter’s stove-side opening fits the collar. Check both ends against the stove outlet and the required pipe specifications.
Are oval-to-round adapters interchangeable?
No. Oval-side dimensions can differ. Compare the adapter’s listed length and width with the measured stove outlet, and check the connection method before ordering.
Is a stove pipe reducer the same as an oval-to-round adapter?
No. A reducer changes pipe diameter, such as 6 inches to 4 inches. An oval-to-round adapter changes the shape of the connection while providing a round outlet.
How do I know which way the crimped end should face?
Check the adapter instructions and the stove or venting-system documentation. The product details may state which end fits inside a pipe or collar, but they do not establish the correct installation orientation for every system.
Can I operate the stove if the adapter fit is uncertain?
Do not rely on a guessed fit. Verify the dimensions and installation requirements first, and seek qualified professional guidance if the correct connection remains unclear.