Note: This rail kit is designed for racks with 25-inch mounting depth. You may need to reserve some space when installing and adjusting the rail kit for racks with 18-inch mounting depth. For installation details, click https://qnap.to/rail-b02.
Please make sure the server racks conform to the following criteria:
1. Rack size
A. Mounting post width: ≥ 17.8″/451mm
B. Panel width: ≥ 19.1″/485mm
C. Mounting post depth: 18″ ~ 32″/443mm~815mm
D. The distance between two rack posts is 18.3″/465mm (center-to-center measurement of the rack’s square holes).
2. The optional rack kits for rack mount models are only compatible with square-hole server racks.