Guidelines for Insulating Glass Dimensional Tolerances

These guidelines should assist in achieving successful performance of organically-sealed insulating glass units and are not intended to limit the materials of construction, design, shape, size or other considerations of usage or exclude other possible dimensional tolerances depending upon specific circumstances.


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.