Features. 2U UPS Rackmount Kit. Mounts any 2U PSI5 or GXT5 rack/tower UPS on a bracket provided per 2-post rack. Liebert 2-Post Rackmount Kit for 2U UPS. Hardware Specifications. Product Type Rackmount. UPS Device Compatible. Compatibility 2U PSI5 or GXT5 Rack/Tower UPS to a 2-Post Rack. Weight: 5 lbs