Voluntary Test Methods & Voluntary Performance Quality Assurance Criteria for Spacers for Sealed Insulating Glass Units

This manual includes information of test specimens, recommended voluntary test and performance quality assurance criteria for hollow shaped spacers to accept edge sealant to minimize air leakage between the spacer and the glass.


IGMA is the trade association representing the interests of the Insulating Glass industry not only in North America but worldwide. Our focus is on developing and advancing new technologies in the manufacture of insulating glass units through development of codes and standards, topic industry publications, education, product certification and leading edge research.