StarTech.com 2U Server Rack Cabinet Shelf - Fixed 18' Deep Cantilever Rackmount Tray for 19' Data/AV/Network Enclosure - Weight Cap. 125lbs/56kg - 2U 19in server rack cabinet shelf 18in deep - EIA/ECA-310 Cantilever tray w/universal fit in Data/Network enclosures w/cage nuts & screws for mounting - Heavy-duty easy to install, durable design w/ SPCC commercial cold-rolled steel 125lb weight cap.