Width Wood Shingles and Shakes (1) Shingles and shakes shall be not less than 65 mm or more than 350 mm wide. [mm]: Inche(s): = Article 9.27.7.2. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only Similar articles Masonry Units End Bearing Length of Joists and Rafters Foundations for Decks and Concrete Steps Maximum Spans for Douglas Fir – Larch Lintels – No. 1 or No. 2 Grade – Non-Structural Sheathing(1)