Fireplace Chimneys Flue Sizes

(1)  The size of a chimney flue serving a masonry fireplace shall be within the allowable range specified in Table 9.21.2.5.A. or Table 9.21.2.5.B.

Table 9.21.2.5.A.
Diameter of Round Flues for Fireplace Chimneys

Forming Part of Sentence 9.21.2.5.(1)

Table 9.21.2.5.B.
Rectangular Flue Sizes for Fireplace Chimneys

Forming Part of Sentence 9.21.2.5.(1)

Table 9.21.2.5.A) & B) Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.