Synology Rail Kit - Sliding Sliding rails making RackStation in and out for easy maintenance A. Mount post width must be equal to or greater than 450 mm B. Panel width must be equal to or greater than 480 mm C. Rack mounting depth: 553 mm to 834 mm D. Rack mounting hole support: Square hole: at least 9.5 mm x 9.5 mm Round hole: at least 7.1 mm Applied models FS-series: FS2500 Installation Guide: https://bit.ly/3oDodyT