This standard has been developed to bring closer harmony between the various windows standards in North America, as well as incorporating significant improvements and additions to the 101/IS 2 standard. It is the result of close work between WDMA, AAMA, the Canadian Window & Door Manufacturers Association (CWDMA) and the Canadian Standards Association (CSA). Like the 101/IS 2 standard, NAFS-02 is a performance-based standard which includes total unit, material and component performance requirements. The addition of skylights, specialty products, side lites and transoms to the standard brings the total number of operating types recognized in the standard to 26.

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