Artesyn Centellis 4100 Installation and Use (2015) - Manual (Page 49)

System Overview
Centellis 4100 Installation and Use (6806800D82E) 51
The system is designed to meet Network Equipment Building Systems (NEBS) level 3 tests.
1.1.1 Shelf
The 13U (575 mm or 22.64 inch) high and 440 mm (17.32 inch) deep shelf for 19" racks is made
of stainless steel.
There is one mounting bracket at each side of the shelf designed for front-mounting the shelf
into a rack. Depending on the rack the shelf is installed in, there are two possible locations of
the mounting brackets at the shelf's side.
You can install the system in a standard 19'' rack or you can operate it on a desk.
Figure 1-2 System Rear View