maximum double door size

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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...
FM Global is an independent underwriting agency with listing, in-plant inspection, and labeling capabilities. FM fire rated doors and frames are available, however there are a minimal amount ...
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...
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...
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...
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 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...
Glass lights are available in fire rated T-Series doors: Limited to one (1) light per door leaf with a maximum of 100 square inches of exposed glass. This applies to all hourly ratings a...
Maximum nominal (overall) single door sizes are as follows: L-Series (Laminated Door) 20 Gage = 3’ 0” wide X  8’ 0” high 18 Gage = 4’ 0” wide X 10’ 0” high 16 Gage = 4’ 0” wide X 10...