Div. B › Part 9 › 9.21 › 9.21.2 — Chimney Flues

9.21.2.6 — Oval Chimney Flues

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(1) The width of an oval chimney flue shall be not less than two-thirds its breadth.

OBC Definitions

Defined terms on this page

chimney

means a shaft that is primarily vertical and that encloses at least one flue for conducting flue gases to the outdoors.

flue

means an enclosed passageway for conveying flue gases.

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