Sample Safety Glass labelA few weeks ago I shared a handy tool from TGP to help select the correct glazing for a particular application – the online product SpeciFIRE.  Today I’m posting another resource on glazing, which addresses the labels that are required for glass in fire door and fire window assemblies.

In addition to the information on the label related to the impact resistance of the glazing, there are markings indicating the location where the product can be used, the number of minutes of fire protection provided, if the glazing passed the hose stream test, and whether the glass will limit the temperature rise during a fire.  It’s important to understand the meaning of these markings – especially when conducting a fire door inspection or evaluating a fire door assembly for compliance with the adopted codes and referenced standards.

To access TGP’s interactive tool and/or to download a PDF of this information, visit

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