Are Hollow Metal Doors Fire Rated?

For the full overview (door types, frames by wall type, parts, resources, and quote tool), visit our Complete Hollow Metal Door Guide.

Browse the full FAQ library: Hollow Metal Door FAQs

Related fire door categories: Fire Rated Hollow Metal Doors and Fire Rated Door Pairs.

What “fire rated” means for hollow metal doors

A hollow metal door is not automatically fire rated just because it is steel. A fire rated hollow metal door must be tested and listed as a complete assembly and must have a permanent label. Whether your opening requires a rating depends on the occupancy, corridor or stairwell location, fire barrier requirements, and the approved code path.

What makes a hollow metal door fire rated?

1) Fire rated construction (core and reinforcements)

• Mineral core - most common; designed to limit heat transfer for 20, 45, 60, 90, or 180 minutes.
• Steel stiffened - vertical steel ribs for security; available in select ratings based on the listing.
• Polystyrene / honeycomb - commonly used for insulation or economy, but not fire rated unless specifically listed and labeled.

2) Labels and listings (what inspectors look for)

• UL or Intertek/WHI label on the door edge (commonly the hinge side).
• Common ratings: 20, 45, 60, 90, and 180 minutes (up to 3 hours), per tested assembly.
• Door, frame, hardware, and glazing must be listed and compatible to maintain the rating.

Fire door requirements - jobsite checklist

If your opening is part of a rated corridor or egress path, the door must function like a fire door in the field, not just on paper. These are the most common compliance items:

• Self-closing - a closer is commonly required so the door closes automatically.
• Self-latching - the latch must engage properly without manual help.
• Rated frame - use a labeled steel frame matched to the door rating and wall type.
• Listed hardware - hinges, locks, strikes, exit devices, and closers should be listed for fire door use.
• Clearances - margins must be consistent; the door should not bind and should close fully.
• Glazing - use rated fire glazing and listed vision kits if glass is present.

Need listed components? Start here: Fire Door Hardware Kits

Why fire rated hollow metal doors are commonly specified

• Life safety - helps compartmentalize fire and smoke.
• Durability - built for high-traffic openings and long service life.
• Security - supports commercial locks, panic hardware, and access control.
• Compliance - helps meet NFPA 80 and building code requirements in rated openings.

Common misconceptions

• Not all hollow metal doors are fire rated - you must order a rated model with a permanent label.
• A rated door installed with a non-rated frame or non-listed hardware can fail inspection.
• Exterior hollow metal doors are not automatically fire rated - verify the listing and job requirements.

FAQs

What fire ratings are available for hollow metal doors?

Common ratings are 20, 45, 60, 90, and 180 minutes (up to 3 hours), depending on the door construction, frame, glazing, and hardware.

Do I need special hardware on a fire rated hollow metal door?

Yes. Use listed hinges, locks, strikes, closers, and exit devices approved for fire door use. Components must be installed per their listings.

Can a fire rated hollow metal door have glass?

Yes, when using rated fire glazing and listed vision kits sized and installed per the door’s listing. If you need vision kits, see: Vision Lite Kits.

How do inspectors verify a fire rated door?

Inspectors typically verify the door label, frame label, compatible listed hardware, closer/latch function, clearances, and any glazing labels.

Related: What Is a 2 Hour Fire Door?

Specify, buy, or get a fast quote

Explore our Fire Rated Hollow Metal Doors or browse complete packages here: Hollow Metal Door Packages.

Prefer a custom configuration? Use our Hollow Metal Door Quote Builder to select size, wall type, glazing, and hardware - receive a quote within 24 hours.

Questions? Call 866-232-5673 or text 210-275-8966.