Winnipeg By-law 1/2008, s. 77(a) — Neighbourhood Liveability By-law

be constructed of masonry, concrete, heavy gauge metal or mesh or other non-combustible materials acceptable to the Chief;

• (b) have a chimney designed and constructed as a proportional and integral part of the fireplace to ensure that an adequate draft is created;
• (c) have its chimney opening entirely covered by a non-combustible spark arrestor, grille or mesh with openings no larger than 12 mm (1/2 in);
• (d) have a side opening to the fire chamber which does not exceed 0.56 2 2 m (6ft ) in area, and in which neither the width nor length is greater than 75 cm (2.5 ft);
• (e) has its side opening entirely covered by a non-combustible spark arrestor, grille or mesh with openings no larger than 12mm (1/2 in); and
• (f) not be used for commercial or industrial applications. By-law No. 1/2008 51 Requirements for outdoor warming fire receptacles