3 Hours Fire Rated Steel Fireproof Door

When safety cannot be compromised, our 3-Hour Fire Rated Steel Fireproof Doors deliver the ultimate line of defense. Engineered for high-risk areas, these heavy-duty doors have passed the industry's most rigorous positive-pressure testing to achieve an official 3-hour (180-minute) UL / Warnock Hersey fire label. Built with premium galvannealed steel and fire-resistant cores, they are designed to stop the spread of fire, smoke, and heat transfer in critical commercial, industrial, and institutional environments.

Vision Lites (Glass): Available with UL-listed ceramic fire glass (strictly limited to a maximum of 100 sq. inches per door leaf to maintain the 3-hour rating).

Fusible Link Louvers: Can be equipped with automatic-closing louvers for ventilation areas (maximum size 24" x 24", automatically snaps shut at 165°F).

Finish: Factory-applied rust-inhibitive prime coat, prepared to take heavy-duty commercial topcoats.

Firewalls & Compartment Barriers: Dividing large commercial or industrial structures.

Electrical Rooms & Transformer Substations: Protecting against internal high-voltage risks.

Data Centers & Server Rooms: Guarding expensive digital infrastructure and data assets.

High-Rise Stairwells & Exit Enclosures: Securing the final escape routes for occupants.

Chemical & Hazardous Material Storage: Containing industrial fire threats.

XZIC manufactures UL listed commercial fire rated doors tested in accordance with UL 10C, NFPA 252, and relevant ASTM standards. Designed for commercial, industrial, and institutional applications, our fire door assemblies provide dependable fire protection, code compliance, and long-term durability. With global export experience and competitive manufacturing advantages, we supply certified fire doors to projects worldwide.

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