The Tripp Lite SRSHELF2P 2U SmartRack Cantilever Fixed Shelf can supports monitors and other equipment with a 60lb capacity. The cantilever shelf is compatible with 2 or 4 post rack enclosure cabinets. The SRSHELF2P is 18 in. deep. You can use 2 of them back to back to create a deep fixed shelf in 2POST racks. The needed mounting hardware is included.