FireDefend™ 20

FireDefend™ 20 glazing material is listed for use in doors with a fire rating requirement of 20 minutes. Classified and labeled by Underwriters Laboratories, Inc.®. File number for labeled 20 minute fire-rated assemblies is R21674. Tests performed in accordance with: UL 9, UL 10B, UL 10C, NFPA 80, NFPA 252

Product Overview


• Fire-rated for 20 minutes

• Impact safety-rated — meets ANSI Z97. 1 and CPSC 16CFR 1201 (Cat. I and 11)

• Specially heat-processed tempered (at least 4 times stronger than regular glass)

• Low-Iron, clear, and wireless

• Fits in standard fire-rated door vision kits

• Large sizes available

• Available in an insulated glass unit (IGU) with other glass products, including (but not limited to):
– Tinted
– Low-E
– Decorative
– Security
– One-way Mirror

• May be lightly sandblasted/etched or beveled on one side without affecting fire rating

• Passes positive pressure test standards UL 1 0C, UBC 7-2, and UBC 7-4

• For use in interior and exterior applications.

• Manufactured in the U.S.A.


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Technical Specs

ThicknessMin. Glass SizeWeightApprox. Visible TransmissionApprox. Visible ReflectionRating Impact-Safety RatingAssembly Max. Exposed Area (IN2/FT2)Max. Width of Exposed Glazing (IN.)Max. Height of Exposed Glazing (IN.)
1 / 4″ (6mm) 4.5″ (Must be 16″ diagonal)3 lb/ft289% 8%20 min. (W/O HOSE STREAM TEST) ANSI Z97. l and CPSC l 6CFR 1201 (Cat. I and 11)Doors3,204/22.253689

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