Printed from the blog of Lori Greene, AHC/CDC, CCPR, FDAI
Email:, Blog: or

Dec 12 2016

QQ: Does every component of a fire door assembly have to be listed/labeled?

Category: FDAI,Fire Doors,Quick QuestionLori @ 1:57 pm Comments (18)

At least once a week someone asks me whether each and every component of a fire door assembly has to be listed or labeled.  The question usually comes up because there is a hardware item that doesn’t seem to be available in a listed or labeled version.  The most common components that prompt this question are safety sensors for automatic operators, door loops/door cords for transferring wires from the frame to the door, and hardware protectors made of plastic or metal that mount adjacent to the lever or panic hardware to protect it from cart traffic.

I have scoured NFPA 80 for a catch-all phrase requiring every component of a fire door assembly to be listed or labeled.  While the specific sections on locks, fire exit hardware, etc., do reference listings or labels for each of these components, if there isn’t a section to address a certain type of hardware, the requirement for a listing or label may not be as clear.

After speaking with NFPA, UL, and Intertek, I believe that the intent is for every component used as part of a fire door assembly to be listed/labeled.  This may be clarified in a future edition of NFPA 80, but currently this paragraph comes closest to establishing the intent:

4.2.6 Components. A fire door assembly shall consist of components that are separate products incorporated into the assembly and are allowed to have their own subcomponents.* Except where restricted by individual published listings, a fire door assembly shall be permitted to consist of the labeled, listed, or classified components of different organizations that are acceptable to the AHJ.

If you know of any accessories like safety sensors, door loops, or hardware protectors that are listed for use as part of a fire door assembly, feel free to share the information in the comments.

18 Responses to “QQ: Does every component of a fire door assembly have to be listed/labeled?”

  1. Michael Glasser says:

    Hi Lori,
    I have had a standing question around this and would love some input. Does the device have to be “listed” or listed as a device which maintains the fire labeling of the opening? For example, a 1″ door position switch that is drilled into the edge of the door and frame. These are typically plastic devices. They are UL listed security devices but I don’t recall any reference to stopping fire from penetrating the door and frame. I would love to be wrong! Thoughts?


    • Lori says:

      Hi Mike –

      I believe the intent is for the door position switch to be UL listed for use on a fire door in addition to the UL listing for security. I know we have a couple of door position switches that are listed for use on a fire door.

      – Lori

      • Stacey Porter says:

        Can you get me more information on the UL listed door position switch. I can’t find them on the website.

  2. Louise says:

    I pulled up Google Earth. I think I saw you at the top of the beach on the right side.
    You were waving from under your palapa.

  3. Moses Lefkowitz says:

    Labeling shall not be required where the top of the
    protection plate is not more than 16 in. (406 mm) above the
    bottom of the door.

  4. Matthew Phillips says:

    The one I see more often is a request for fire listing for butt hinges. I have spoken with UL on many occasions and labeled hinges are not required on fire exits provided they meet the specifications spelled out in 6.4.3 or if different, meet the manufacturers published listings. Section 4.2.5 gives leeway to generic items not labeled as long as they are identified and their specifications are spelled out in NFPA 80.

    • Lori says:

      Hi Matt –

      You’re right…hinges are considered “items of a generic nature” which are not required to be individually listed/labeled if they meet the requirements spelled out in the standard (NFPA 80). I’ll add something about this to the post after I get back from vacation. 🙂

      – Lori

  5. David Moyer says:

    Hi Lori –
    Power loops, concealed power transfers, and electric power transfer hinges are all UL listed components. The concealed power transfer and electric hinge power transfer product typically have a UL10C 3 Hr rating. I’m not sure if the door loops are rated 3 Hr. Check DORMA+kaba or SDC Security products and you will find UL Listings. Kickplates should be labeled above a certain size. I cannot comment on sensors or hardware protectors. I did quickly review the BEA site and I didn’t see a UL Listing on the two door sensors I reviewed.

    • Lori says:

      Hi David –

      There are UL listings for fire, burglary, panic, etc., so for use as part of a fire door assembly we need to look for the listing for UL 10C specifically. There are some product categories where those products don’t seem to be readily available.

      – Lori

      • David Moyer says:

        Hi Lori –
        To paraphrase, you asked, “are there any safety sensors, door loops, or hardware protectors that are listed for use on a fire door.” I completely understand there are different listings at UL for different applications. The SDC Security door hinges and PT5 concealed power transfer I described previously are specifically listed UL 10B. SDC Security’s Heavy Duty PTM concealed power transfer is specifically listed UL10C 3 Hr. This information is defined on their datasheets. I didn’t specifically look at the door loop, that is why I stated I wasn’t sure. (But after your reply, I reviewed the loops and they are not listed 10B or 10C. I’m not surprised – the plastic ends would melt off in seconds, exposing a hole into the door for fire to enter the door.) As I stated in my earlier reply, I do not know if sensors or hardware protectors are listed. This isn’t because I don’t understand what UL listing is required for fire door usage, but because I didn’t see the ‘UL Listed’ symbol in any product literature sheets that I reviewed prior to submitting my earlier post.

        Sorry, I just re-read my earlier post.

  6. Jerry Rice says:

    Great topic, this comes up every day! Thanks and Merry Christmas!

  7. Carol White says:


    This just happen to me today. Read your post yesterday and I received a phone from a hotel here in Florida we just finish. Fire Marshall was at the site looking at a pair of Full Glass Doors, 45 MIN Rated and he question not only the hardware which was Ives Hinges, Schlage L Series locks, but we had to give proof on the glass in the doors. When we purchase fire rate wood doors with glass, we always have glass installed by the MFG, It done by their testing and approvals. So I able to pull my PO and Acknowledgement and provide information for the fire rated glass. So I hope this satisfy the Fire Marshall for now. Your Blog has been a great help!!!
    Thanks Carol

    • Lori says:

      Hi Carol –

      I’m glad the timing was right and the blog is helpful! I will continue to work on code development so eventually there are fewer mysteries for us to try to figure out!

      – Lori

  8. Jerry Austin says:

    This might not be the most informed reply but here it goes. Before retirement, I used to try to answer these types of questions at the Hospital by considering the information UL puts out to be a “cook book” description of the assembly of components that was found to survive the attempted destruction of testing. If I could, I always used the entire assembly description and its component parts as my guide. I was always curious about things so I would also research what I could of the listing of individual components such as wall construction, hinge construction, gaps, etc. as they applied to the assembly of interest. This effort was to recreate an assembly that had the best chance of surviving the fire and limiting smoke. Not every variation can be tested of every component so what survived the original testing for listing seems to me to be the safest bet and surest to create.

  9. Nicole Deschler says:

    By looking through the guidelines, it seems as if every component does need to be labeled. Hopefully in the future, the compliance guidelines will be rewritten to make this point even clearer!

Leave a Reply