Expand you room indoors or outdoors with ease. Parrett's well engineered Bi-Fold window system not only provides a beautiful design but also great functionality. This window system is ideal for opening one living area to another. Simply release the locks and pull the window panels with ease in the open direction.Quality craftsmanship and hardware will provide years of beauty and environment. Two panels to multiple panel systems are available in you choice or wood species. Consider the possibilities with Parrett's Bi-Fold window system.