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


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

FireLite NT

Fire-Rated, Safety-Rated Glass Ceramic with Surface-Applied Film

FireLite® NT is a 3/16" (5 mm) thick glazing material, composed of FireLite and surface-applied approved fire-rated film. FireLite NT is listed for use in doors, sidelites, transoms and borrowed lites. It is available in two different surface conditions for clear viewing, premium grade and standard grade.

20-180 Minutes

Fire-rated Hose Stream Tested Impact-rated Positive Pressure UL Listed and Labeled
ultraHD UL
Lincoln University, Grim Hall interior stairwell with FireLite® NT fire-rated glass ceramic and Fireframes® Designer Series fire-rated frames

Docs & Downloads

Fact Sheet (Premium)

Fact Sheet (Standard)

CSI Format Specs

Premium FireLite FAQ

Product Comparison Chart


See the ultraHD difference

  • Now with ultraHD® Technology for improved color, clarity and surface quality
  • Available in two surface conditions for clear viewing, Premium Grade and Standard Grade
  • Fire-rated for up to 3 hours with hose stream test
  • Impact safety-rated - ANSI Z97.1 and CPSC 16CFR1201 (Cat. I and II)
  • Glass ceramic with high performance surface-applied approved fire-rated film
  • Clear and wireless
  • Withstands thermal shock
  • Large sizes available
  • Protects from fire on both sides of the glass
  • May be lightly sandblasted or etched on one side without affecting fire rating
  • Passes positive pressure test standards UL 10C
  • 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. File number for labeled fire-rated assemblies is R13377. Tests performed in accordance with UL 9, UL 10B, UL 10C, CSFM 43.7, NPFA 80, NFPA 252, NFPA 257, CAN4 S-104 and CAN4 S-106. Approved for use in New York City: MEA 290-90-M-6.  Approved for use in Los Angeles: LARR 25798.

Rating Assembly Max. Exposed
Area (in2/ft2)
Max. Width
Of Exposed
Glazing (in)
Max. Height
Of Exposed
Glazing (in)
20 min. to 60 min. Doors (non-temp rise) 3,204/22.25 36 89
20 min. to 60 min. Doors (temp rise) 100/0.69 12 33
20 min. to 60 min. Other than doors 3,325/23.09 95 95
90 min. Doors (non-temp rise) 2,034/14.13 36 56-1/2"
90 min. Doors (temp rise) 100/0.69 12 33
90 min. Other than doors 2,627/18.24 56-1/2" 56-1/2"
3 hour Doors 100/0.69 12 33

Check with frame manufacturer for maximum tested glass sizes and required stop height.

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

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 shall be nominal 3/16" (5 mm) thick FireLite NT supplied by Technical Glass Products. The surface condition shall be either: FireLite NT Premium Grade (both surfaces are polished to minimize any distortion; industry leader for quality and unmatched by alternative products or production methods); FireLite Standard Grade (may have slight surface waviness or imperfections which may become more apparent in larger sheet sizes; comparable to alternative fire-rated ceramics that are marketed as having a "Premium" finish); or Obscure FireLite NT (patterned surface).


Before specifying a surface grade of FireLite NT, you may wish to obtain samples for comparison. Request a sample kit.


Thickness: 3/16" (5 mm) overall
Weight: 2.4 lb/ft2
Approx. Visible Transmission: 88%
Approx. Visible Reflection: 9%
Hardness (Vicker's Scale): 700
Fire Rating: 20 minutes to 3 hours
STC Rating: 35
Impact safety-rated: Meets ANSI Z97.1 and CPSC 16CFR1201 (Cat. I and II)

Figures are for Premium Grade FireLite NT. Figures will differ slightly for Standard Grade and Obscure (patterned) surface finishes.

Surface Options

See the ultraHD difference

Because FireLite is made from transparent glass-ceramic, it differs in color from float glass. FireLite appears to have a warmer earth tone when compared to the blue green tint of typical float glass. However, like float glass, FireLite ceramic will not demonstrate a highly perceptible color once installed in a frame. Additionally, FireLite products are manufactured in three distinct surface grades (Premium, Standard and Obscure) that are best reviewed prior to specification. Please contact TGP at 800.426.0279 or to request a sample kit.

Click on the images below for a larger view.

 FireLite Standard Grade:
FireLite Standard Grade polished surface quality is comparable to alternative fire-rated ceramics that are marketed as having a premium finish.

For more information about FireLite surface grades, please see our Premium FireLite FAQ.
 FireLite Premium Grade:
FireLite Premium Grade is the industry leader for quality and is unmatched by alternative products or production methods. Both of its surfaces are ground and polished to provide superior surface quality, improving the overall clarity.

For more information about FireLite surface grades, please see our Premium FireLite FAQ.
 FireLite Obscure Grade:
The glass-ceramic features a patterned surface to allow more privacy.

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.

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

Designed for maximum durability and performance, the Hardwood Series offers an attractive alternative to traditional hollow metal frames. Available with fire ratings from 20 to 60 minutes, this system can incorporate a wide range of fire-rated glazing materials with glass sizes that surpass traditional systems.

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

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

Care & Warranty

  • Care must be taken not to scratch the film.
  • Do not use bristle brushes or abrasive cleaning materials.
  • Cleaning methods used should be similar to those used on Plexiglas®.
  • A soft cloth or clean synthetic sponge is recommended for washing. Do not use the same towel or sponge for wiping sills or frames.
  • A squeegee of 70 - 85 durometer hardness is recommended for removal of wash water and dirt from the film.
  • Do not apply heavy pressure in any cleaning operation.
  • Do not leave the film wet.
  • Make sure you use a different sponge, cleaning cloth and water bucket for cleaning the outside and the inside of the windows.
  • A little extra detergent for cleaning the film side will make using the squeegee easier.

Failure to comply with these care and cleaning guidelines may result in loss of warranty.

Download a PDF of our Care & Warranty Brochure.

View Full Site