Jackson Exit Devices are universally recognized as the standard for aluminum storefront hardware. This crossbar is designed with simplicity in mind, yet it will provide many years of smooth, reliable operation. Concealed Vertical Rod device is suitable for use with 2″ narrow, medium, and wide stile aluminum, wood, or hollow metal doors. The 48″ (1.22 m) long contoured crossbar is field sizeable, and the device is shipped to fit up to 84″ (2.13 m) tall door. Extensions for taller doors are available. The 10 Series Exit Device is the perfect solution when considering a reliable maintenance free means to satisfy life safety requirements.