maximum window size for fire door

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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...
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...
ASTM E-119 is a test standard for walls, partitions and floor or roof systems: This test standard is also used for ceramic type glasses when used as window wall and/or borrowed light frames. ...
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: ...
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...
Yes, Steelcraft doors we are approved up to 48" in height or not to exceed a total 2304 square inches per face. Protective plates are usually flat sheets of metal or plastic applied to one or both...
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...
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. ...
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...
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...