Tripp Lite SRTH12UB Vertical Extension Top Hat - For Networking, LAN Switch, Patch Panel, PDU, Router, Server, UPS - 12U Rack Height x 19" (482.60 mm) Rack Width x 27.76" (705 mm) Rack Depth - Rack-mountable - Black - 0 mg Dynamic/Rolling Weight Capacity

Features l Standard-Depth 12U Top Hat Expands Your Rack Application without Adding Floor SpaceThis SmartRack® 12U vertical expansion rack is ideal for users who want to add rack equipment, but have limited floor space in their server room or data center. The SRTH12UB attaches to the top of your already existing SmartRack floor-standing rack, allowing you to expand vertically without taking up any additional floor space. Hardware for assembly and mounting is included.