2-Post Rack-Mount Installation Kit for Rack-Mount UPS Systems. The RK2PC enables 2-post rack mounting of select SmartOnline models, and the following Eaton UPS systems (one kit required for each UPS, EBM, PPDM, or transformer): 9PX1500RT, 9PX1500RTN, 9PX1500RT-L, 9PX1500RTN-L, 9PX2000RT-L, 9PX2000RTN-L, 9PX3000RT-L, 9PX3000RTN-L, 9PX1500GRT-L, 9PX2200GRT-L, 9PX3000GRT-L, 9PX1000GRT, 9PX1000RT, 9PX1500GRT, 9PX2000RT, 9PX2000RTN, 9PX2200GRT, 9PX3000GLRT, 9PX3000GRT, 9PX3000RT, 9PX3000RTN, 9PX3K3UN, 9PX3K3UNP1, 9PX3K3UNP2, 9PX3K3UNTF5, 9PX5K, 9PX5KP1, 9PX5KP2, 9PX5KTF5, 9PX6K, 9PX6K-10, 9PX6KP1, 9PX6KP2, 9PX6KTF5, 9PX6KUS, 9PX700RT, 9PXEBM180RT, 9PXEBM180RTUS, 9PXEBM36RT, 9PXEBM48RT, and 9PXEBM72RT