The traditional look for windows and bi-folding doors alike incorporates glazed elements with bars. You can decide to go with one of three types of bars for your new bifolding door: Helima bars are inserted in between the two panes of the double glass element. Wiener bars are put on both sides of the glass. And the classic glass-splitting bars work as parts of the frame, connecting the double or triple glazing. Use the windows24.com online configurator to choose the number and position of the bars on every element of your external bifold door.