Fire-rated metal doors have become a fundamental component in modern building safety, serving a crucial role in protecting lives and property. Their primary purpose is to compartmentalise and contain fire, preventing its spread and allowing valuable time for evacuation and emergency response. These doors are designed to withstand high temperatures and resist fire for a specified period, typically ranging from 30 minutes to several hours. This resistance is measured in terms of fire ratings, with doors graded for their ability to endure fire exposure while maintaining structural integrity.