APC AP9625 2-Post Mounting Kit for Smart-UPS and Symmetra

• Product Type - Post Rail Kit
• Maximum Height - 89.00 mm
• Maximum Width - 51.00 mm
• Maximum depth - 267.00 mm
• Shipping Weight- 2.27 KG

I bought this to hold an HP Proliant rack server in a centered 2-post rack, and it serves that purpose. Only downside is that it's not secured by any screws, it's just sitting there. But it will never get knocked out.