Fire-rated doors develop important barriers that slow down flames and smoke

https://www.scribd.com/document/1079228060/Commercial-Garage-Door-Repair-Work-for-Fire-Rated-Doors-Overhead-Door-Company-of-Joliet-s-Best-Practices-161725

Fire-rated doors produce important barriers that slow fires and smoke, offering residents time to evacuate safely while restricting structural damage, protecting supply, and protecting long-lasting business investments.