Viracon’s insulating glass units have been CBA rated with the Insulating Glass Certification Council (IGCC) in accordance with ASTM Specifications E-773 and E-774 "Specification for Sealed Insulating Glass Units". ASTM E 2190 "Standard Specification for Insulating Glass Unit Performance and Evaluation" now supersedes ASTM E-773 and E-774. ASTM E 2190 test requirements are equal to or greater then the E-774 CBA and CGSB 12.8 Insulating Glass Standard. In 2005 IGCC began certifying insulating glass to ASTM E 2190, and Viracon’s insulating glass is now IGCC certified to ASTM E 2190.