Heat Circulating Duct Openings
(1) The clearance of combustible material above heat circulating duct openings from those openings shall be not less than,
(a) 300 mm where the combustible material projects not less than 38 mm from the face, and
(b) 150 mm where the projection is less than 38 mm.
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Article 9.22.9.4 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.
