Tempered glass is regular glass that has been heat treated to increase the strength, increase the thermal shock and prevent personal injury by changing the breakage pattern. Tempered glass is used in fireplace doors on masonry and pre-fabricated fireplaces equipped with a grate to hold the burning wood.  Tempered Glass is also used in other applications where heat, mechanical strength and safety are a factor. 

The breakage pattern of tempered glass is very different from regular glass. Regular glass breaks into long splinters.  Tempered Glass will fragment into small bits and the entire glass will fragment. 

There should be at least 4 inches between the front of the grate and the glass. Tempered glass has a shock rating of 400 degrees and will break if exposed to direct contact with flame. 

Available in thickness of  1/8 - 3/16 - 1/4 inch 
Colors Clear, Bronze, and Light Gray Smoked 

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