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Transition to Larger Flue - Does it Matter? - Forno Bravo Forum: The Wood-Fired Oven Community

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Transition to Larger Flue - Does it Matter?

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  • Transition to Larger Flue - Does it Matter?

    I am building a 35 inch pompeii oven and have been working on installing a 6" flue.
    The transition is finished and it reduces to a little under 6" x 6". The ratio of door area to flue area is about 14%

    But... I have just seen a good condition stainless steel flue that is 9" diameter

    I am confident I can install the bigger flue over the 6" x 6" square hole but I am just concerned that it may not draw well with it going down to 6"x6" and then expanding to 9"dia.

    Can anyone give me some advise if it will be a problem...

    Thanks
    Brett
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