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What Is A Fire Rated Door?

A Fire rated door by definition are constructed of materials that work together to slow or stop the spread of flames, smoke and, in certain applications, radiant and conductive heat transfer.

Doors Unlimited Inc carries a variety of fire rated doors in stock. Offering 20 minutes, 45 minutes, 60 minutes and 90 minutes of fire rating on both wood or metal commercial doors. Available in stock and ready to be shipped for your job site.

Commercial Fire Safety for Hollow Metal and Wood Doors

The National Fire Protection Association inspects commercial properties annually while the Underwriters Laboratory agency decides whether door models meet the fire resistance ratings.

Metal & Wood double or single doors consist of ratings of 20 minutes, 45 minutes and 90 minutes.

These ratings are manufactured for the tolerance of fire.

How are Fire Rated Doors Tested?

Fire-rated doors are required to be certified through independent laboratories such as Underwriters Laboratories, Inc., to achieve their official fire rating. To establish fire endurance, hose stream tolerance, temperature rise as well as smoke and draft control abilities, fire-rated glass doors must undergo several rigorous test such as:

  1. Fire Endurance Test
  2. Hose Stream Test
  3. Temperature-Rise Criteria

Also, they go through other tests to achieve requisite performance ratings. Common tests associated with rated doors include the positive pressure test (UL 10C) and the smoke and draft control test (UL 1784). The National Fire Protection Association (NFPA) also issues tests for fire-rated doors, including NFPA 252 and NFPA 80.

How To Know if a Door is Fire Rated

Identifying fire-rated doors is important to ensure that a building is up to code and that any modifications to a door will not negate its fire rating.

If modified with non-fire-rated hardware, it will lose its fire rating.

To identify a fire-rated door, a person must find on the door in question a fire label from an approved testing agency. All fire rated doors in the United States must be labeled with a permanent label. Fire rated door frames also have to include a permanent label.

Order A Fire Rated Door

Use our interactive door builder to create a free door quote and add a fire rating to your commercial metal or wood door.

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