UL (Underwriters Laboratories) Listed fire rated steel doors are tested and certified to meet specific standards for fire resistance and safety. Designed to prevent the spread of fire and smoke for 20 minutes to 3 hours.
Key Features:
- Steel Construction: Durable protection against heat and smoke.
- Fire-resistant Core: Internal layers of gypsum or mineral wool for insulation.
- Intumescent Seals: Materials that expand under heat to block fire paths.
- Self-closing: Automatically closes when sensing heat/smoke with positive latching.
- UL Labeling: Clearly marked with fire rating specifications.