This European Standard covers the evaluation of conformity and the factory production control of insulating glass units (IGU) for use in buildings. NOTE 1 For glass products with electrical wiring or connections for e.g. alarm or heating purposes, other directives, e.g. Low Voltage Directive, may apply. NOTE 2 Units for which the intended use is only artistic and therefore no essential requirement is required, are not subject to CE marking and are not part of this standard.