The 14u server rack rails are designed to mount on networking equipment, PDU, patch panel, recording studio racks and so on. ^^ These 14u rack mount rails feature high quality cold rolled steel and black powder coating, not only beautiful and generous on appearance but also sturdy and durable. ^^ Multiple sizes are available from 2u rack rails to 18u rack rails. The unit numbers are printed clearly on the rails and convenient to mount devices according to your needs. ^^ 2 pieces of 14u rack rails and mounting screws are included, easy to install.