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proper size of vent opening - Forno Bravo Forum: The Wood-Fired Oven Community


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proper size of vent opening

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  • proper size of vent opening

    has anyone figured out a ratio for the diameter of the oven to the size of the vent opening?
    i have a 42" floor, and my vent opening can be up to 18" wide. any suggestions for the depth of the opening? optimal with my design would be 12" x 6", but i'm not sure if this will draw well enough.
    overdo it or don't do it at all!

    My 2005 pompeii build

  • #2
    12x6 will be fine -- that's about what mine is (I used a 13x9 clay flue which has rounded corners so the vent actually tapers into something more along the line of 12x6 before entering the flue as I didn't round the corners of the steel). It's about 3' tall.

    An 8" diameter chimney is also a good size and matches pretty standard stove chimneys so they're readily available.