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These requirements cover the design and construction of single swing Wood Core Flush Doors, which have shown by fire tests to possess sufficient properties to warrant a 20 min fire-protection rating when tested in accordance with CAN/ULC-S104, Standard Method for Fire Tests of Door Assemblies.
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