Fire-Rated or Fire/Impact Safety-Rated Insulated Glass Units

20-180 Minutes



FireLite IGU is composed of FireLite glass ceramic products and tempered or annealed float glass. Make-ups that achieve 3-hour fire ratings must be specified with FireLite NT or FireLite Plus®.

"It’s very easy to be different, but very difficult to be better. "

-Jonathan Ive


  • ultraHD® Technology for improved surface quality, clarity and color
  • Fire-rated for up to 180 minutes with required hose stream test
  • Available in two surface grades: Premium and Standard
  • Clear and wireless glass ceramic
  • Impact safety-rated - meets ANSI Z97.1 and CPSC 16 CFR1201 (Cat. I and II)
  • Typical 1" thickness fits in Fireframes® Designer Series or any standard fire-rated frames (variable thicknesses available)
  • Available incorporating a variety of glass products, including (but not limited to): Tinted; Art Glass; One-Way Mirror; Low-E; Reflective; Lead Glass (X-Ray)
  • Withstands thermal shock
  • Large sizes available
  • May be lightly sandblasted or etched on one side without affecting fire rating
  • 10 year limited warranty
  • Note: This product is not a barrier to radiant heat. This product does not meet test standards ASTM E119 or UL 263. If your jurisdiction requires a "barrier to heat" product, please contact TGP regarding Pilkington Pyrostop.



U-Value: Similar to standard insulating units with a make-up of: 1/4" float glass - 1/2" air space - 1/4" float glass. Summer U-Value: Approximately .55*. Winter U-Value: Approximately .49*
STC Rating: 3/16" FireLite - 9/16" air space - 1/4" float glass = Approx. 35**
3/16" FireLite NT - 9/16" air space - 1/4" float glass = Approx. 35**
5/16" FireLite Plus - 9/16" air space - 1/4" float glass = Approx. 38**

*U-values increase with use of high performance float glass producers.
**Values were achieved with these specific make ups.


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
NFPA 80 NFPA 252 NFPA 257
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
Note: Individual lite sizes cannot exceed "Max. Exposed Area" shown above.
Check with frame manufacturer for maximum tested glass sizes and required stop height.
This information is intended for general reference only. For current listing details, please call Technical Glass Products.


FireLite is made from transparent glass-ceramic which appears to have a warmer earth tone when compared to the blue green tint of typical float glass. Like float glass, FireLite ceramic will not demonstrate a highly perceptible color once installed in a frame. FireLite also features ultraHD® Technology, for improved color, clarity and surface quality. See the ultraHD® difference.

View the available surface grades below or see our Premium FireLite FAQ for more information. These surface options are best reviewed prior to specification. Please contact TGP to request a sample kit.

FireLite Premium Grade

Both surfaces are ground and polished to provide superior surface quality, improving the overall clarity. FireLite Premium is the industry leader for quality and is unmatched by alternative products or production methods.

FireLite Standard Grade

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

FireLite Obscure Grade

Features a patterned surface to allow more privacy.


Fireframes® Designer Series

20/45/60/90 Minute
Fire-Rated Doors and 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 and Frames

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

Hollow metal steel frames are supplied by others.

The time, in minutes or hours, that materials or assemblies can be expected to prevent flames and smoke from spreading.

As heat develops within the source area, pressure within the enclosed room begins to build relative to the pressure outside. Once the fire reaches equilibrium in the positive pressure zone, smoke, hot gases and flames are forced through any openings in the door or window assembly. Testing to the UL 10C standard more closely simulates real fire conditions.

Blocks radiant and conductive heat transfer from one side of the glass to the other. A required characteristic of glass used as a wall.

Classified and labeled by Underwriters Laboratories, Inc.® (UL), an independent product safety certification organization.

Immediately following a furnace test, heated glass is subjected to water from a fire hose. The cooling, impact and erosion created by the hose stream tests the integrity of the glass. In the U.S., the hose stream test is required for all fire ratings over 45 minutes (all fire ratings require it in Canada).

Available as a temperature rise door with Pilkington Pyrostop® fire-resistive-rated glass for 60-90 minute applications

Temperature rise doors provide a barrier to radiant and conductive heat transfer.

Available in stainless steel frame finish options for increased design flexibility.

Building codes clearly define hazardous locations where impact safety glass is required. Glass with this designation has been tested to meet impact safety requirements required for areas such as doors, sidelights, and areas close to the floor.

FireLite IGU is a fire-rated insulated glass ceramic unit that also complies with energy codes. It is designed for use in exterior applications where energy codes require an insulated product, or for interior applications with special needs such as sound reduction.

Withstands continuous temperatures to 1292° F for use in high efficiency heating appliances.

The ability of glass ceramic to withstand sudden heating, cooling, or both without cracking, shattering or exploding out of the frame.

The ability of the glass to stop various types of ammunition. Ratings are assigned in levels from 1 to 8, with a Level 8 rating being the highest (able to stop a 7.62mm rifle lead core full metal copper jacket, military ball).

The capacity of an element in a building structure to support a weight in addition to its own.

Listed and labeled by Intertek, an independent assurance, testing, inspection and certification organization.

Glazing designed to increase the amount of time required to gain entry. This additional time is intended to allow for the enactment of lock-down protocols and to allow for the arrival of emergency response teams. May be used in areas with high risk of prolonged attack or in critical areas such as vestibules. Forced entry resistant glazing should also resist penetration from hand-held or hand-thrown objects such as hammers, crowbars, bats, knives, bricks and rocks. (Source: NGA Glass Technical Paper FB71-21)

This product is both fire- and security-rated and is appropriate for educational facilities.

This product is smoke-rated and tested to UL 1784.

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