ULC 113 Standard Specification for Wood Core Doors Meeting the Performance Required by CAN/ULC-S104 for Twenty Minute Fire Rated Closure Assemblies (CAN/ULC-S113:2016)
standard by Underwriters Laboratories of Canada, 02/01/2016
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.