NanaWall SL80/81 Folding Series is an aluminum framed, thermally broken system which allows for expansive glass walls—and broad vistas when opened. The SL80 features a smooth rounded frame profile, compared to the angular profile of the SL81.

The SL80 and SL81 are the most energy efficient of its kind on the market and are rated, certified, and labeled National Fenestration Rating Council 100/200 and meet Energy Star standards. The system also excels at air and water resistance as well as superior sound insulation.

With floor supported technology, the new system offers ultra-smooth operation (rolling on stainless steel wheels on a stainless steel track), and more flexibility for applications where a building’s height might change over time, such as from settling or snow loads. View our complete line of folding door systems at