Maximum glass light size for a 90 minute (1 1/2 hour) door depends on the type of glass being installed.
Wire glass = 100 square inches is max exposed glass when wire glass is used.
Note - ma...
DW-Series Fire Rated Borrowed Lights are available in the following sizes:
60 minute (1 hour) rating = 2721 square inches of visible glass.
maximum frame rabbet to rabbet dimensions = 78 1/4...
On fire rated transom and/or sidelight frames and fire rated window frames, Steelcraft labeling procedures only control the O/A width and/or height of the frames based on wall condition. The amount...
GrainTech® is available with very broad fire ratings.
The option of GrainTech® does not affect the fire rating of the door.
Fire ratings depend on the door series, hardware and applications.
...
Non fire rated doors can be furnished with a maximum 3" diameter hole for viewer preparations.
Fire rated doors have a 3/4" maximum holes size unless otherwise listed by UL or ITS/WHI. Viewers mus...
Maximum UL Fire Rated door sizes are as follows:
A-Series:
4' 0" X 8' 0" single door
8' 0" X 8' 0” double door or pairs
B-Series
4' 0" X 10' 0" single door
8' 0" X 10' 0” double doo...
ITS/WHI is "Warnoch Hersey". ITS/WHI is the formal designation for Intertek Testing Services / Warnock Hersey. ITS/WHI is an independent agency with testing, listing, in-plant inspection, and label...
Fire Rated three (3) frames are available in the following maximum door opening sizes:
F and FN-Series frame:
4' 0" X 10' 0" single door opening
8' 0" X 10' 0” double door opening
MU-Ser...
ITS/WHI Fire Rated three (3) frames are available in the following maximum door opening sizes:
F and FN-Series:
4' 0" X 10' 0" single door
8' 0" X 10' 0” double door or pairs
MU-Series:
...
Maximum glass light sizes for 3 hour fire doors is as follows:
Wire glass - not approved for use in 3 hour fire doors.
Ceramic glass:
UL & ITS/WH allow one (1) light with 100 square inc...