Fire-Rated

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 Label Rating Rating  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
 S SMOKE  SMOKE  

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



 

 

To learn more on the safe of Fire Rated doors read the link below:

http://www.compliance.gov/forms-pubs/eresources/fastfacts_firedoors_080108.pdf

Contact us

TNB Doors, Inc

 

1525 E 168th St

South Holland, IL 60473


Phone: (708) 362-5600
Fax: (708) 225-5109
Email: tnbdoors@comcast.net

Business Hours

 Mon - Fri

7AM - 3:30PM

 

Any questions?

Drop by our location or contact us by email. We look forward to your visit!

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