US STANDARD HOTEL FIRE DOOR FEAGURES

1. Fire Rating

Typically 20, 45, 60, or 90 minutes, depending on location within the building (e.g., guest rooms usually require 20–45 min).

Must be tested and labeled by recognized agencies (e.g., UL, Intertek/WH).

2. Core Construction

Fire-rated doors usually have a solid mineral core, steel stiffened, or composite core.

Must be able to withstand heat, flames, and structural stress during fire exposure.

3. Material

Common materials:

Steel

Solid-core wood with fire-resistant veneer

Laminates or fiberglass (limited use)

Edges are often reinforced with steel or intumescent strips.

4. Self-Closing Devices

Mandatory: All fire-rated doors must be self-closing and self-latching.

Closers must be tested for durability and fire performance (UL 10C).

5. Smoke Seals / Gasketing

Doors must have smoke-rated seals (especially “S” label doors).

Intumescent seals expand under heat to block smoke and flame passage.

6. Hardware Requirements

Fire-rated hardware includes:

Fire-rated hinges, closers, and locks

Panic hardware or exit devices (required in high-occupancy areas)

No deadbolts unless tested and certified as fire-rated

Hinges and other hardware must be metal and comply with UL fire listings.

7. Vision Panels / Glass

Limited to specific sizes (e.g., 100 sq. in. max for 60- and 90-minute doors).

Must use fire-rated wire glass or ceramic glazing with appropriate label.

8. Labeling

Each door must have a permanent fire label (steel tag or embossed mark).

Labels must indicate the fire rating, manufacturer, and testing agency (e.g., “UL 45 min”).

9. Frame Requirements

Fire-rated steel or wood frames required, also tested and labeled.

Frames must be anchored properly and match the door's fire rating.

10. Installation & Maintenance

Must be installed according to NFPA 80 and manufacturer instructions.

Annual fire door inspection is required (NFPA 80), including operational checks and gap clearances.