Tempered safety glass is made to with the safety of yourself and love ones in mind! Tempered glass is made and most commonly used on fireplace doors. As it's a general rule of thumb to leave your doors open while burning a fire, tempered glass can withstand a pretty good amount of heat before shattering.
The great part about the tempered glass is that it is made to break as safely as possible. We know this sounds weird but when it comes to glass shattering due to too much heat exposure, you want a glass that does so safely. Tempered glass shatters into tiny little pieces that are close to harmless.
Tempered glass is not made to install on a fireplace or stove that does not have the option to open for burning. It is important that you do NOT close your doors when using a tempered glass as it will shatter due to high heat exposure.