DORMA Architectural Hardware has introduced a line of Grade 1 narrow stile exit devices that feature a durable, compact configuration to meet an opening's functional and aesthetic demands. Based on the supplier's workhorse 9000 Series heavy duty devices, the 9600/9700/9800 Series narrow stile devices have been tested beyond 2,500,000 operating cycles - more than five times the ANSI/BHMA 156.3, Grade 1 standard. The exit devices have been designed to easily retrofit most manufacturers' narrow stile devices. The 9600 Series (concealed vertical rod) and 9800 Series (surface vertical rod) narrow stile exit devices use heavy-duty castings for extra durability. The 9700 Series (RIM chassis) features heavy-duty 1020 grade carbon steel casting for a latch bolt static load rating of 1,500 lbs, over three times the ANSI/BHMA 156.3, Grade 1 standard for exit devices.
