Tag Archives: UL fire door

UL Certified Fire Doors: Meeting the Highest US Safety Standards

As a leading UL fire door manufacturer in China, YK Commercial Door Company produces UL 10C and UL 10B certified fire-rated doors that comply with strict North American safety requirements. Our doors undergo rigorous third-party testing to ensure reliable protection for commercial and residential buildings.

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1. UL Fire Door Certifications Overview

A. UL 10C (Standard for Positive Pressure Fire Tests)

✔ Most Common Certification for modern fire doors
✔ Testing Includes:

• Furnace exposure (up to 1925°F for 3 hours)

• Hose stream test (30 psi water impact post-fire)

• Load-bearing capacity during fire conditions

B. UL 10B (Standard for Fire Tests of Door Assemblies)

✔ Older Standard (still accepted in some jurisdictions)
✔ Negative Pressure Testing (different furnace method)

YK’s UL Door Ratings:

• 20-minute (limited combustible walls)

• 45/60-minute (general use)

• 90/180-minute (high-risk areas)

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2. Construction & Materials for UL Doors

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3. UL Door Applications in North America

A. Commercial Buildings

✔ Stairwells – 90-minute rated doors
✔ Elevator Lobbies – 60-minute fire/smoke assemblies

B. Industrial Facilities

✔ Electrical Rooms – 3-hour rated doors
✔ Chemical Storage – Fire + corrosion-resistant models

C. Residential High-Rises

✔ Apartment Entry Doors – 20-minute fire/smoke control

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4. UL vs Other Fire Door Standards

YK’s Multi-Certification Doors:

• Single door assembly meeting UL + EN + GB standards

• Cost savings for global projects

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5. Why Choose YK’s UL Fire Doors?

✅ Direct Factory Pricing – 30% lower than US manufacturers
✅ Fast Lead Times – 45 days for standard UL 10C doors
✅ Complete Documentation – UL certification files, installation manuals
✅ Custom Engineering – Non-standard sizes up to 4′ x 10′