98-F and 99-F rim fire exit devices for all types of single doors up to 4´ x 10´ (1219mm x 3048mm) or 8´ x 10´ (2438mm x 3048mm) double doors with 9954 or 9854 mullion, UL listed for Fire Exit Hardware. The 98-F device has a smooth mechanism case and the 99-F device has a grooved case. The rim device is non-handed except when the following device options are used: -2 (Double Cylinder) or SS (Signal Switch). Comes with all mounting hardware and standard black 299F Strike. Fire Device does not have dogging feature.