Going Over the Door's Needed Fire Rating | Ask the Experts


I have door that comes with a 3 hour fire rating. My opening only calls for a 90 minute. Is it okay going over the door’s needed fire rating time and can I still use this door?



You most certainly can. As long as the door is equal too or above, you can use that door. If necessary, we can label your door, depending on the required fire rating, for 45 minutes, 90 minutes, or 3 hours. We also can label you frame, if required and it meets code, for 45 minutes, 90 minutes, or 3 hours.


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