The APC Left and Right Rail OM-756H REV12 is a mount hardware kit designed for rack-mounted servers and networking equipment. With a 19-inch rack unit width and a weight capacity of 330 lb, this kit includes two side panels and is made in the Philippines. The rack depth is 1200 mm, and the overall height of the rack unit is 2U, making it suitable for organizing and supporting a variety of IT infrastructure components.