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KERALITE is a fully code compliant UL-listed fire protective glass-ceramic able to resist high temperature and thermal shock up to 180 minutes. This cost effective and sustainable "wire-free" fire-rated glass ceramic is ideal for fire windows and fire door vision-lites.


  • FIre protective: up to 180 minutes
  • Largest tested dimensions in the market
  • Keralite Select for the lowest haze and sharpest view
  • Hose-stream tested
  • Available as filmed or laminated safety glass
  • Exterior double glazing available
  • Transparent and wireless

General Characteristics:

Thickness: 3/16" (5 mm)

Weight: 2.4 lbs/ft²

True color rendition

STC Rating: 35

UL listed for up to 3 hours

Very high light transmission values of up to 88%

Maximum sheet sizes: Approximately 47" x 96"

EPD and HPD certificates available

Environmental Product Declaration: UL Certified Impact rating: None (For applications requiring an impact-rated material KERALITE offers KERALITE® FILMED



is a 3/16" thick glass ceramic with a 20-180 minute fire rating installs into standard fire rated frames and contains smoke and flames. Surface applied film; it fulfills maximum human impact safety requirements per CPSC16, CFR Part 1201 CAT II. This is our polished version of Keralite fire-rated glass ceramic..



Fire-rated up to 90 minutes (180 minutes in doors) with required hose stream test

Specially floated glass-ceramic with surface applied

Transparent and wireless

Suited for use with standard fire-rated frames with the same rating

Conforms to positive pressure test standards

Environmentally-friendly glass-ceramic; produced without the use of toxins

Can be used to construct insulated glazing units

General Characteristics:

Thickness: 3/16" (5 mm)

Weight: 2.4 lbs/ft²

True color rendition

U-Value BTU: 0.88

STC Rating: 35

Approximate Light Transmission: 86%

Maximum sheet sizes: Approximately 46" x 96"

Impact rating: CPSC 16CFR Part 1201 (CATEGORIES I & II), ANSI Z97.1, CAN/CGSB-12.1-M


Glass Distributors Inc. is a certified distributor of KERALITE. This product is available in a range of stock and custom cut sizes. Contact us for more information.


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