Glossary / fire door

fire door

A door assembly tested to a fire-protection rating, often 20 minutes. That is not the same as an OSFM 8150 WUI exterior door listing. Read the listing.

Last verified 2026-08-23. JSON (CC BY 4.0)

Do not use as a synonym: WUI door.

Related

• listed
• assembly
• doors
• Garage doors as an ember path

Where this term is used

4 guides use this term.

• ASTM E119 versus a WUI wall test
• Garage doors as an ember path
• Why glass breaks in a wildfire
• WUI doors versus 20-minute fire doors