1U Fixed Rail Kit for Rackmount Synology **Mount post width must equal or greater than 451mm **Panel width must equal or greater than 480mm **Mounting depth: 570mm~720mm (for 13-series and earlier 1U models) **Mounting depth: 570mm~810mm (for 14-series and future 1U models) **Rack mounting holes must be square and at least 9.5mm x 9.5mm Applied Models - https://www.synology.com/en-nz/products/RKM114