StarTech.com 1U 19 inch Server Rack Rails 24-36 inch Adjustable Depth Universal 4 Post Rack Mount RailsThese 1U server rack rails let you mount devices, such as servers or networking equipment, that did not come with rack rails into your 19 4 post rack. The adjustable server rack rails are also a great solution for mounting OEM equipment such as Dell, IBM, HP or Apple servers. Adhering to the EIA ECA 310 standard for 19 inch server rack equipment and accessories, these mounting rails are compatible with most 19 inch server racks. The depth is