Glass rated for heat is described as which option?

• A. Wired glass - 45-90min fire rating
• B. Fire rated glass - 45-90min fire rating
• C. Both wired and fire rated glass - 45-90min fire rating
• D. Neither wired nor fire rated glass

Answer: (B)

Fire-rated glass is the term used for glass that has been tested to resist heat and maintain its barrier during a fire. The 45–90 minute fire rating reflects the duration the glass can withstand exposure while keeping its integrity, with the exact time depending on the product, thickness, and the test standard used. Wired glass, by itself, is not automatically fire-rated, so it’s not described as glass rated for heat unless it carries a listed fire rating. That’s why the correct description is fire-rated glass with a 45–90 minute fire rating.