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International Fireproof Door’s standard frames are manufactured from galvannealed or satincoat steel and are prepared and reinforced to receive specified architectural hardware in accordance to ANSI A115 Standards. Stainless Steel, Lead Lined (X-Ray) and G90 frames are also available. For exterior application, frames are available with a thermal break (optional).

Fire Labels:      fire labeled steel frames are approved by Warnock Hersey (WH), Fire Labelling Program.  Fire labeled steel frames must be installed with an equivalent fire labeled door with approved fire listed hardware.  For fire labeling restrictions and limitations refer to the Fire Labelling Guide for Steel Frames. 

  • Hinge jambs are prepared and reinforced to receive 3 standard weights 4 ½ x 4 ½ (114 x 114) butt hinges.
  • Strike jambs are prepared and reinforced to receive one standard 4 7/8” (124 mm) strike in accordance to ANSI A115.1.
  • On welded-up frames all welded joints are ground smooth and touched-up with prime paint.

KNOCK DOWN CORNER- Easy, quick and sharp mitered corners provide for rapid installation and assembly for a clean uniform appearance.


HINGE REINFORCEMENT-10 gauge high frequency hinge  Reinforcement with return bend for added strength.

WELDED CORNER-  Welded corners are ground smooth and prime painted (touched up) to provide a seamless look.

STRIKE REINFORCEMENT- 18 gauge strike reinforcement supplied with closed back eliminating the need to install an additional dust or mortar protection cover in accordance to ANSI A115.1 requirements.
FLOOR ANCHOR- 18 gauge.



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