Fire Rated Door Hardware Explained (US)


Fire safety in the US is shaped by a mix of national standards, state building codes, and local requirements, covering how fire door hardware is designed, specified, tested, and maintained. This guide explains what to look for when choosing hardware for a fire door, and how we can help you get it right for your project. 

What a fire rating means 

A fire rated opening is an assembly: the door, the frame, and the hardware are tested and labeled to work together. For the opening to keep its rating, the hardware generally has to latch the door securely closed, work with a door closer so the door shuts on its own, and be approved for use on that assembly. 

Fire doors are also escape routes. Hardware on an egress door must let people open it from the inside without a key, special knowledge, or extra effort. 

What we supply 

We supply door hardware, not fire doors. Fire doors and frames are made and tested by specialist manufacturers. Before you specify, confirm which hardware is approved for the door assembly on your project, and talk to us about which of our products suit it. 

Our UL listed hardware

Two parts of our range are UL listed for use on fire rated doors:

  • ML-9000 series locks
  • Door closers

If you can’t find the rating you need, contact us and we’ll confirm what’s available for your project.

Lever handles and the California fire code 

Lever shape matters on egress doors. A lever that catches on clothing or a bag can slow someone down when they’re leaving in a hurry. The 2025 California Referenced Standards Code (Title 24, Part 12), Section 12-10-202(f), requires levers with a curved return that ends within 1/2 inch of the door face, so nothing can snag as people pass through. The requirement applies in California and in some local jurisdictions, so check whether it applies to your project.

Codes and standards 

Fire door requirements in the US vary by state and local jurisdiction. In California, lever design on egress doors is set by the state’s own code. 

Standard or code  What it covers
2025 California Referenced Standards Code (Title 24, Part 12) Lever design on egress doors, including the curved return requirement (Section 12-10-202(f))

Always confirm what your project needs with your local building official.

Talk to our team

Our team can help you choose fire rated locks and door closers for your project. Call 855.318.0002 or contact us to talk it through.