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45/60/120 Minute Fire-Rated Frames

Fireframes® Aluminum Series combined with Pilkington Pyrostop® glass, provides a barrier to radiant and conductive heat transfer. The narrow aluminum profiles allow unlimited areas of glazing in fire separations. Fabricated in the United States, the system may incorporate Fireframes Designer Series or Fireframes Heat Barrier Series doors by SHT.



  • Fire ratings of 45/60/120 minutes
  • Extruded aluminum framing with sharp edges and narrow sightline
  • Custom aluminum face caps available to meet project needs
  • Easy installation
  • Frames supplied "K-D" (knock-down)
  • Incorporates large individual panes of Pilkington Pyrostop glass, composed of low-iron Pilkington OptiWhite™ glass
  • Compatible with Fireframes Designer Series or Fireframes Heat Barrier Series full-glass doors from SHT
  • Standard finish is clear anodized. Powder coating and other anodized finishes are available
  • Door hardware available to fit functional requirements. Check with SHT for compatibility
  • Designed for interior use. For exterior applications, please see Fireframes Curtainwall Series
  • Passes wall assembly test standard UL 263 / ASTM E119 for 60 and 120 minute ratings
  • Fabricated in the U.S.A.


Classified and labeled by Underwriters Laboratories, Inc.® as Design Number U558 and Underwriters Laboratories of Canada as CIKV7.R25274-U558. Frame tests performed in accordance with UL 263 / ASTM E-119 (60-120 minutes), CAN/ULC-S101, NFPA 251, UL 9, UL 10C, UBC 7-2 and UBC 7-4. Doors tested in accordance UL 10B, UL 10C, ASTM E2074, and NFPA 252. Approved for use in Los Angeles – LARR 25798.

Max size

Maximum Allowable Size Information


Rating Max. Exposed Glass Area Per Piece Max. Exposed Glass Single Dimension
45 Min.* 4,500 in2 95-1/4"
60 Min.** 4,320 in2 89-13/16"
120 Min.** 3,794 in2 110-3/8"

* 45 minute window systems are classified as an Opening Protective as per UL 9, with a maximum overall frame size of 109" x 120".

** 60 and 120-minute tests conducted per UL 263 / ASTM E-119. Therefore assembly is classified as
a wall assembly, and not subject to "opening" area limitations.


Rating Max. Single Door Leaf Size Max. Exposed Glass Size Per Piece
Fireframes Designer Series
20 Minutes 42" x 96" 36" x 89"
45 Minutes 42" x 96" 36" x 89"
60 Minutes 42" x 96" 36" x 89"
90 Minutes 42" x 96" 36" x 56-1/2" (divided lite door)
Fireframes Heat Barrier Series***
60 Minutes 42" x 96" 41–5/8" x 89–3/4"
90 Minutes 42" x 96" 41–5/8" x 89–3/4"

***Where temperature rise door is required.


All door hardware for Heat Barrier Series doors is supplied by Technical Glass Products. Please contact Technical Glass regarding your individual hardware requirements.

Standard door hardware package may include:

  • Hinges
  • Surface mounted or concealed closers
  • Single mortise lock
  • Panic hardware
  • Tall bottom rails

CAD Details

To obtain CAD files of any of these detail drawings, please use our CAD request form.


Download a PDF of our Care & Warranty Brochure.