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: Provides superior protection against heat and smoke.
- Fire-resistant Core: Internal materials like gypsum or mineral wool reduce heat transfer.
- Intumescent Seals: Expand under heat to create a smoke barrier.
- Self-closing Mechanism: Automatically closes when sensing heat or smoke.
- UL Listed Labeling: Clearly indicates fire rating and safety compliance.