For Mounting Your Tripp Lite NRFP Robotic Fiber Panel System The NRFP-BRKT comes with two pre-assembled slider rail units, each with loose screws to let you make manual adjustments. Each unit includes rear and front brackets, a stiffener, a slider and six socket-head cap screws. Also included with the kit are four positioning rulers (two each for WECO and EIA racks), a clearance/level tool to ensure proper clearance and leveling of the NRFP chassis, and a cantilever tray for rear support of the NRFP-LCU-1 (sold separately). The NRFP-BRKT is required for mounting the NRFP-500MM-CP in a 4-post rack-mount application.