Fire-rated glass and framing products from Technical Glass Products (TGP)


Fire-rated glass and framing products from Technical Glass Products (TGP)
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WireLite NT

Fire-Rated, Impact Safety-Rated Wired Glass with Surface-Applied Film

WireLite® NT is a 1/4" (6 mm) glazing material composed of wired glass and a fire-rated surface-applied film. WireLite NT is listed for use in doors, sidelites, transoms and borrowed lites.

20-90 Minutes

Fire-rated Impact-rated Hose Stream Tested Positive Pressure UL Listed and Labeled

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  • Fire-rated for 20, 45, 60 and 90 minutes required hose stream test
  • Impact safety-rated–meets ANSI Z97.1 and CPSC 16CFR1201 (Cat. I and II)
  • Wired glass with high performance surface-applied fire-rated film
  • Available in Diamond Clear (3/4" pattern) and Georgian Clear (1/2" pattern)
  • Available as an insulated glass unit (IGU)
  • Withstands thermal shock
  • Passes positive pressure test standards UL 10C
  • Fits in Fireframes® Designer Series from TGP, or standard fire-rated frames
  • 3-year limited warranty*

Note: This product is not a barrier to radiant heat. This product does not meet test standards ASTM E-119 or UL 263. If your jurisdiction requires a "barrier to heat" product, please see Pilkington Pyrostop.


Classified and labeled by Underwriters Laboratories, Inc.® and Underwriters Laboratories of Canada. Test report number for labeled fire-rated assemblies is UL File No. R13377. Tests performed in accordance with UL 9, UL 10C, ASTM E2010, NFPA 252, and NFPA 257.

Standard Sizes

Rating Assembly Max. Exposed
Area (in2/ft2)
Max. Width
Of Exposed
Glazing (in)
Max. Height
Of Exposed
Glazing (in)
20 min. Doors (non-temp rise) 3,289/22.84 34-3/4 92
45 min. Doors (non-temp rise) 1,296/9 54 54
45 min. Other than doors 1,296/9 54 54
60-90 min. Doors 100/.69 10 33

Sizes When Glazed With Pemko FG3000™

Rating Assembly Max. Exposed
Area (in2/ft2)
Max. Width
Of Exposed
Glazing (in)
Max. Height
Of Exposed
Glazing (in)
45 min. Doors (non-temp rise) 2,856/19.83 34 84
45 min. Other than doors 4,608/32 100 100
60 min. Wood Door (non-temp rise) 960/6.66 12 80
90 min. Doors (non-temp rise) 552/3.83 12 46

Note: Individual lite sizes cannot exceed "Max. Exposed Area" shown above.

Surface Finish Max. Sheet Size
Diamond 58" X 100"
Georgian 58" X 100"

This information is intended for general reference only. For current listing details, please call Technical Glass Products.


All glass designated on the drawings as fire-rated and impact safety-rated shall be 1/4" (6 mm) thick WireLite NT supplied by Technical Glass Products.



Thickness: Nominal 1/4" (6 mm) overall
Weight: 3.79 lb/ft2
Approx. Visible Transmission: 77%
Fire Rating: 45 minutes
Impact safety-rated: Meets ANSI Z97.1 and CPSC 16CFR1201 (Cat. I and II)

Framing Options


Designer Series - 20/45/60/90 Minute Fire-Rated Doors & Frames

The Designer Series doors and frames incorporate precise European engineering, providing a sleek, modern alternative to traditional hollow metal frames.

Traditional Hollow Metal Steel Frames-Fire-Rated Doors & Frames

TGP glazing can be used in any approved fire-rated door and frame assemblies.

Storage & Handling

Inspect each piece of WireLite NT immediately before installation and eliminate any with observable edge damage or face imperfections.

WireLite NT must be handled with care during transportation, storage, inspection and installation.  Store in a dry place.

Care & Warranty

TGP warrants only that the surface applied film will maintain peel adhesion without cracking, peeling, crazing, delaminating or discoloring during a period of 3 years from the date of purchase, providing the products have been properly shipped, stored, handled, installed and maintained.  The remedy for surface applied film if proved to be defective under the terms of this warranty is limited to the replacement of the the film material only.

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