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15. When you build a chase enclosure for chimney sections above the roof, the chimney must extend at least
3 ft. (92 cm) above the chase enclosure and at least 2 ft. (61 cm) higher than any wall, roof or building
within 10 ft. (3.1 m) of it. See Figure C and D to determine the configuration that applies to your roof (flat
or sloped roof and the distance between the chimney and the highest point of the roof and/or the nearest
chimney).
Figure C
Figure D
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