The RackSolutions 1U 100-G Rail provides a versatile and efficient mounting solution for Dell PowerEdge R210 and R220 servers. This rail is designed to fit both 2 Post and shallow 4 Post racks, accommodating square, round, and threaded holes for a wide range of installations. With a mounting depth range of 15 to 23.5 inches (381 to 596 mm), it ensures a secure fit in various rack setups. As an effective alternative to the standard Dell rail kit, the 1U 100-G Rail can be installed as a fixed mount in your rack, either center-mounted or flush-mounted. This replacement rail kit is designed for those who need a reliable mounting solution without the need for the original Dell rail kit. For center mounting in a 2 Post rack, an additional part (P/N: 1UBRK-R4) is required, which is sold separately.