The expanded Contemporary Collection and Premium Series includes aluminum-clad windows and patio doors with newly redesigned multislide door systems. With options up to 57 feet, 6 inches wide, the multislide doors are available with two panel variations. The Contemporary Collection comes with narrow stiles and rails that are 3 ¼-inch wide, while the Premium Series offers a 5 1/8-inch stile and rail with a height range that can be expanded up 12 feet. The panels for both are 2 ¼-inch thick.