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Fire Rated Door Labels / Ratings

Doors and frames are rated and given a label after extensive testing by the Underwriters Laboratory.  Rated doors must be self-closing and must have a positive latch.

UL LabelRatingRating Max Glass Area
 A 3 HR
180 MIN
 100 square inches per leaf
 B 1 1/2 HR
 90 MIN
 100 square inches per leaf
 C 3/4 HR 45 MIN
 1296 square inches per lite
 D 1 1/2 HR
 90 MIN
 Refer to local codes
 E 3/4 HR
 45 MIN
 Refer to local codes
  1/3 HR
 20 MIN
 1296 square inches per lite

UL Labels D and E are for exterior doors that are subject to fire hazards from the outside of the door.

Refer to the codes applicable to your specific jurisdiction for label or rating requirements.

CSI Masterformat Divisions

Metal Doors and Frames: 08 11 00
Metal Frames: 08 12 00
Metal Doors: 08 13 00
Wood Doors: 08 14 00
Plastic Doors: 08 15 00
Composite Doors: 08 16 00
Integrated Door Opening Assemblies: 08 17 00


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