Compatible With: This 1U Keyboard Sliding Shelf is Designed for Universal Compatibility with 19" Network Equipment Server Cabinets and Enclosures. Sliding Functionality: The Tray Features a Smooth Sliding Mechanism, Allowing Easy Access and Operation of the Keyboard. Sturdy Structure: The Additional Horizontal Bar between the Slides Prevent the Keyboard Shelf from Shaking When Sliding Out. Durable Metal and Sturdy Structure Ensure Long-lasting Performance and Stability. Product Meas.: 19" W x 8"D, Internal Meas.: Width 17.1" x Depth 7.9"; Taking 1U Space; the Shelf can be Pulled Out 6.89" Deep for 2-Post Installation. Enough Space for a Keyboard. Effortless Installation: Only Need to Insert the Side Brackets onto the Frame, Including Mounting Hardware Simplifies the Installation Process within Your Rack Setup. Space-Saving Design: The Compact 1U Form Factor Optimizes Space Utilization within Your Server Cabinet or Enclosure. NOT INCLUDING KEYBOARD.