The seamlessly glazed door panel of the planoglas ultra inner door consists entirely of safety glass on both sides. This not only allows for maximum transparency, but also creates an elegant impression and a flat, easy-to-clean surface. The technical features can be specified individually or combined to meet current guidelines for sound insulation, fire and smoke protection, as well as anti-burglary requirements. This functional, but also elegant looking model meets all current demands for high-quality interior doors.