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These requirements cover air filter units of both washable and throw-away types for removal of dust and other airborne particles from air circulated mechanically in equipment and systems.
Standard for Thermal Insulation, Polystyrene Boards (ULC S701.1)standard by Underwriters Laboratories of Canada, 02/25/2022
STANDARD FOR 650 °C FACTORY-BUILT CHIMNEYSstandard by Underwriters Laboratories of Canada, 04/07/2022
Standard for Factory-Built Type A Chimneysstandard by Underwriters Laboratories of Canada, 04/07/2022
Standard for Fireplace Inserts (ULC S628)standard by Underwriters Laboratories of Canada, 04/07/2022