1.0The Construction Specifierhttps://www.constructionspecifier.comTesting Glazing in the Field: Performance Classes - The Construction Specifierrich600338<blockquote class="wp-embedded-content" data-secret="0ewcc9xcE0"><a href="https://www.constructionspecifier.com/testing-glazing-in-the-field-performance-classes/">Testing Glazing in the Field: Performance Classes</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.constructionspecifier.com/testing-glazing-in-the-field-performance-classes/embed/#?secret=0ewcc9xcE0" width="600" height="338" title="“Testing Glazing in the Field: Performance Classes” — The Construction Specifier" data-secret="0ewcc9xcE0" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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Up until the 2008 edition of American Architectural Manufacturers Association/Window and Door Manufacturers Association/Canadian Standards Association (AAMA/WDMA/CSA) 101/I.S.2/A440, North American Fenestration Standard/Specification for Windows, Doors, and Skylights (NAFS), there were five performances classes of windows with differing requirements for test pressures, allowed leakage rates, and other variables. This sidebar discusses the current four types, and their minimum performance grades.