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Twenty-minute Doors Tested Without Hose Stream
Oct 31, 2018

Doors and frames may also be rated as 20 minutes without a hose stream. These doors have successfully passed a 20-minute fire test, with the omission of the hose stream test, and bear a label that specifically states “TwentyMinute-Rating Tested Without Hose Stream.” These doors may be provided with vision lights only limited in size by the door manufacturer’s fire labeling procedure authority. Assemblies identified as “Twenty-Minute-Rating Tested Without Hose Stream” should not be confused with 1/3-hour fire rated doors, which have been tested in accordance with the standard fire test procedure that includes the hose stream test.

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