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Fire-Rated Glass Ceramic

FireLite® is a 3/16" (5 mm) thick glazing material listed for use in non-impact, safety-rated locations such as transoms and borrowed lites. FireLite is available in two different surface conditions for clear viewing, premium grade and standard grade.



Now with ultraHD® Technology for improved color, clarity and surface quality
  • Fire-rated for up to 90 minutes with required hose stream
  • Glass ceramic
  • Clear and wireless
  • Available in two surface conditions for clear viewing,Premium Grade and Standard
  • Also available in an obscure pattern
  • Large sizes available(see "Listings" tab)
  • Withstands thermal shock


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. All above tests performed in accordance with UL 9, UL 10C, CSFM 43.7, NFPA 80, NFPA 257, UBC 43.2, UBC 43.4, UBC 7-2, UBC 7-4 and CAN4 S-104. 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 (in 2/ft2) Max. Width Of Exposed Glazing (in) Max. Height Of Exposed Glazing (in)
20-60 min. Other than doors 3,325/23.09 95 95
90 min. Other than doors 2,627/18.24 56-1/2 56-1/2
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.

Please note: FireLite is not an impact safety-rated product and should not be specified as
such. However, SHT does offer FireLite Plus and FireLite NT which carry both fire and impact
safety ratings. Please ask for more details.


All glass designated on the drawings as fire-rated shall be nominal 3/16" (5 mm) thick FireLite supplied by Technical Glass Products. The surface condition shall be either: FireLite Premium Grade (both surfaces are polished to eliminate 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 (patterned surface).


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 90 minutes
Impact Safety Rating: none
STC Rating: 35db

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

Surface Options

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 SHT at 800.426.0279 or to request a sample kit.

Click on the images below for a larger view.

FireLite Standard Grade:
May have slight surface imperfections, which may become more apparent in larger sheet sizes. FireLite Standard Grade is comparable to alternative fire-rated ceramics that are marketed as having a “Premium” finish.
FireLite Premium Grade:
Both surfaces are polished to minimize distortion and provide superior surface quality. FireLite Premium Grade is the industry leader for quality and is unmatched by alternative products or production methods.
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.

Traditional Hollow Metal Steel Frames-Fire-Rated Doors & Frames
SHT glazing can be used in any approved fire-rated door and frame assemblies.


To maintain aesthetics, it is important to clean the glass during and after construction. For routine cleaning, use a soft, clean, grit-free cloth and a mild soap, detergent, or nonabrasive window cleaning solution.

Rinse immediately with clean water and remove any excess water from the glass surface with a squeegee. Do not allow any metal or hard parts of the cleaning equipment to contact the glass surface.