Arcon Group

Fire Rated Doors and Frames:

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Fire rated doors and frames play a vital role in keeping people safe and minimizing property damage during a fire. Many components of a door assembly can be rated to withstand fire for a specified period of time. A few of the components include:

 • Doors

• Door frames

• Window frames

• Hardware

• Transoms

 • Sidelights

• Glazing

Fire Ratings Fire door assemblies have 5 ratings:

• 20 minute

• 45 minute

• 1 hour

• 1-1/2 hour

• 3 hour the rating of a fire door assembly is based on the lowest rated component.

Fire Door Frames:

• There are not hourly ratings for basic fire door frames unless the label specifically states the frame is rated less than 3 hours.

• Some state and local building codes require hourly ratings up to and including 3 hours for a door frame.

• If a frame bears a recognized label qualifying it as a fire door frame, it may support doors rated 3 hours or less.

Fire Door Frames:

• Frames used in masonry walls may be used with a maximum 3-hour fire door, while frames used in drywall stud walls are intended to be used with a maximum 1-1/2-hour fire door.

• Consult with individual fire door frame manufacturers listings for fire door frames that can be used in drywall stud walls with a maximum 3- hour rating.

• Grout is not required for fire rated frames installed in either drywall or masonry walls at any hourly rating.

Sidelights and Transoms Frames:

• Sidelights are treated differently than transom frames.

• Sidelights are available only up to 1 ½ hours

• Transom frames can carry up to a 3 hour label, just like 3-sided frames.

Types of Fire Rated Doors:

SDI manufacturers offer stock and custom fire rated doors. They are available with a variety of cores, such as:

• Honeycomb

• Polystyrene

• Steel stiffened

• Temperature rise

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