The Series 6100 is designed to meet Title 24 compliance using the prescriptive method. The window uses a thermal strut system and offers dual and triple glazing, as well as a 3 ¾-inch frame, mitered corners and European corner keys. The series offers fixed, casement, awning and combination configurations, with a maximum casement size of 48 by 96 inches and maximum fixed lite size of 60 square feet.