StarTech.com 3U Fixed 19-Inch Adjustable Depth Universal Server Rack Rails (UNIRAILS3U) Universal design mounts to almost any 19' server, or other equipment for maximum mounting versatility Three-piece rail construction enables a broad range of adjustable depth configurations, to accommodate almost any size of rack Cross bars allow for mounting of equipment that can't span the 19' rack expanse Sturdy steel construction Weight capacity up to 97kg (215lbs.) Adjustable depth from 420mm (16.5 in) - 1054mm(41.5 in) Multiple mounting hole patterns for securing your equipment Removable rear cable management panel