NanaWall Systems, the pioneer of the opening glass wall category, announces its largest screen option available for its sliding glass wall systems: Screen ONE XL. It is a minimally framed, fully retractable and non-pleated screening option with a patented braking system designed for large openings to provide an enhanced indoor/outdoor experience for homeowners. Screen ONE XL features a patented, ultra-strong UV resistant fiberglass mesh that is reinforced with a wire tension system. This system provides a transparent-yet-tough barrier between homeowners and outdoor irritants, while still facilitating fresh air and other innumerable benefits of the outdoor experience. With the use of double installation Screen ONE XL is also Open Corners Possible, which allows screens to meet in the corner and enables open-air patios and porches to provide a year-round option for outdoor entertaining. The screen easily slides in place when needed and stacks away when not in use.