When it comes to fire-rated doors, using the correct hinges is critical for safety and compliance. Dive into these quick tips to ensure you're meeting standards and optimizing performance:
- Use at least two spring hinges.
- If using two, the third hinge MUST be a ball-bearing hinge (plain-bearing hinges are not allowed).
- Ensure hinge height is either 4-1/2" or 4" to stay compliant
2. Size Matters:
- Spring hinges are suitable for doors up to 3'0" x 7'0". For larger doors, only ball-bearing hinges are permitted unless specifically allowed by the manufacturer’s listing.
3. Pro Tip for Placement:
- Install spring hinges at the middle and lower positions. Place the ball-bearing hinge at the top for better load support and to prevent sagging.
Reference: Check out 2021 NFPA 80 (Sections 6.4.3.1.1.3, 6.4.3.1.1.4, 6.4.3.1.2, and Table 6.4.3.1) for full details.
Explore Pamex's H45S, H44S, and HR44S series to find durable and reliable options for your fire-rated door needs.