9847-F/9947-F Fire exit concealed vertical rod device for use on pairs of doors up to 8′ x 10′ (2438mm x 3048mm) , UL listed for fire exit hardware. Devices are ANSI A156.3 _ 2008 Grade 1. The 9847-F device has a smooth mechanism case and the 9947-F device has a grooved case. The concealed vertical rod device is non-handed except when the following device option is used: SS (signal switch) devices. Finishes _ US3, US3A, US4, US4A, US10, US26, US26D, US26D-AM Antimicrobial, US28, 313, 315 & 643E. US15 and US32D available with 98 Series only.