AAMA 507-15, “Standard Practice for Determining the Thermal Performance Characteristics of Fenestration Systems in Commercial Buildings,” has been updated. According to Joe Hayden (Pella) of AAMA 507 Review Task Group, primary driver for this revision was to improve and clarify reporting certificate – now changed to "Fenestration Product Rating Certificate." Other revisions include removal of outdated information as well as incremental improvements and editorial clarifications.