What is the requirement for proper fire rated vision panels?

For fire rated door assemblies in new horizontal exits, vision panels are required, according to section 18.2.2.5.6 of the Life Safety Code NFPA 101-2012.

If wired glass is used, and the vision opening is sized correctly according to NFPA 101-2012, Table 8.3.4.2 (does not exceed the area and dimension limits), then the wired glass is considered to be compliant. If glazed glass is used, regardless of whether the vision opening is sized correctly, the glass is to be labeled since that is the only way to determine if it is fire rated glass.